Celebrity Bridesmaids: See All the Photos!

The iCarly star was pretty in pink in the all-important role of maid of honor for a childhood friend's May 21 nuptials.

"@Ninamunden moved in next door to me when I was seven and she got married to her high school sweetheart yesterday!" Cosgrove wrote alongside a backseat selfie with the bride, their rose bouquets on display.

Though she's a professional actress, Cosgrove added that she had "never been more nervous or emotional giving a speech in my entire life" and that she "couldn't be happier" for her bestie.

Bell was a beaming bridesmaid for the April 9 wedding of her pal Laura Moses, smiling as she walked down the aisle in a plunging pink gown with cutouts and fringe skirt. Her husband Dax Shepard also was part of the wedding party, serving as officiant for the vows between Moses and her husband Matthew Collins. 

In a snippet of official videography posted by the bride to Instagram, The Good Place alum and Armchair Expert podcast host, who have been married since 2013, tore up the dance floor together after their respective wedding party duties were complete.

Who says bridesmaids dresses can't be sexy? Ariana Grande wore a custom, two-piece Vera Wang set to older brother Frankie's Star Wars-themed wedding to Hale Leon.

The outfit included a daring cutout bralette top and a matching maxi skirt with a revealing high slit. She completed the look with a black bow, which she tied around her half updo, and a dainty pair of heart studs. 

The singer's mother, Joan Grande, officiated the ceremony at the Grande family home in Boca Raton, Florida on May 4. 

Bryce (in seafoam lace with a flower crown) wasn't the only member of the Howard family standing up to support sister Paige at her New York wedding; dad Ron also officiated the big day. 

Technically, the actress was an officiant and not a bridesmaid at pal Hadley Walsh's wedding, but since she got all decked out in puffy-sleeve chartreuse for the occasion we're going to count this one as "in the wedding party."

The Queen's Gambit star (center) was maid of honor at pal Ivy Getty's lavish San Francisco wedding, wearing a custom gray silk John Galliano for Maison Martin Margiela Haute Couture gown.

Celebrity chef Rachael Ray was a first-time bridesmaid at the wedding of fellow Food Network star Anne Burrell. Ray matched others in the bridal party wearing a burnt orange "classic '50s-style party dresses" with an A-line, tea-length skirt. 

The celebrity sisters glammed up for close friend Lauren Harrison's big day. The bride, who is director of design and product for the Jessica Simpson Collection, let her bridesmaids have fun with "feathers and rhinestones" for their dresses. 

Jessica looked stunning in a plunging gold gown covered with sparkling rhinestones, while Ashlee chose a muted silver dress covered in subtle sparkles and feathers on the cap sleeves and down the skirt.

The supermodel's bridesmaid roster was positively angelic, thanks to the who's-who of Victoria's Secret models she enlisted for her Ecuadorian wedding to Snapchat's Juan David Borrero. Among the 'maids were  Lais Ribeiro, Shanina Shaik, Kelsey Merritt, Sara Sampaio and Josephine Skriver.

Something blue! The supermodel (right) shared a selfie from her weekend trip home to St. Louis, matching with eight other bridesmaids in a dusty egg blue high-neck gown as they posed for a pic with the bride. 

The Riverdale star (third from left) was one of seven bridesmaids and four bridesmen that stood up at the wedding of Petsch's castmate Vanessa Morgan to her baseball player love Michael Kopech.

Petsch and the other bridesmaids (pictured getting ready in matching robes) wore orange cowlneck slip dresses, and the actress read "To Love Is Not to Possess," by James Kavanagh during the ceremony.

Celebrities often spend so much time in the makeup chair that they become close friends with their glam squad members, and that's definitely the case with Lady Gaga and her pro, Sarah Tanno. The Global Artistry Director for Marc Jacobs Beauty and Haus Laboratories co-founder got married in Mexico this weekend, and her celebrity bridesmaid wore a pretty pink Jonathan Simkhai slip dress with matching pink hair. Gaga wrote on Instagram, "Two of my best friends just got married. Time to party!"

High School Musical I Do! The two former costars and pals reunited (in matching silver beaded Adrianna Papell gowns) to serve as bridesmaids in the wedding of mutual friend Kim Hidalgo.

Rihanna headed back home to Barbados for the wedding of her childhood friend Sonita Alexander and was all-smiles during the ceremony, seen here cheering on her bestie in a cobalt blue dress with ruffled sleeves.

The actress served as "groomswoman" for her Mad Men co-star Michael Gladis' wedding to actress Beth Behrs (inset), wearing the same Joanna August wrap dress that Beth's bridesmaids wore.

It's the ultimate BFF tradeoff: Taylor wrote childhood pal Abigail Anderson into one of her songs, and Abigail gave her the honor of carrying her train (while wearing a ruched maroon halter and matching lipstick).

Hailey Baldwin (left) was the maid of honor at her sister Alaia's wedding, posing for a family photo with her mother (center) and cousin Ireland (right) who also served as a bridesmaid looking chic in all black.

Bestie Julianne Hough's wedding marked Nina's first time being a bridesmaid, and it did not disappoint: "It was absolutely breathtaking and perfect," she tells PeopleStyle of the experience. Of course, we'd feel the same if we got to wear custom pale pink Marchesa and hit the dance floor with pros like the Houghs!

Tracee served as a bridesmaid in her brother Ross Arne Naess' wedding (and so did sister-in-law Ashlee Simpson!) wearing a simple white slip dress and wreath crown. And yes, she had permission to wear the bridal color, as all the ladies who participated in the nuptials wore that hue, including her mom Diana Ross.

Just five months after saying "I do" at her own nuptials, the actress walked down the aisle again! This time she served as a bridesmaid for her friend Julia Koenig, wearing an outfit perfect for the Hawaiian ceremony -- a floral-print slip dress, flower crown and nude block sandals.

Stassi Schroeder, Scheana Marie, Kristen Doute and Brittany Cartwright stood up for castmate Katie Maloney's wedding in silver V-neck halter gowns (that cost less than $180!) from White by Vera Wang for David's Bridal. And Maloney told PeopleStyle the key to finding a style all the "picky b---s" would agree upon was making sure it "was pretty but not over the top or with a ton of sequins or sparkles."

Rachel wore a pale mauve off-the-shoulder mermaid gown, an ethereal golden crown and a buckled wool cape to be #alwaysabridemaid for Hart of Dixie costumer Gelareh Khalioun.

The Bachelor winner (pictured with fiancé Jordan Rodgers) walked down the aisle - as a bridesmaid, don't get too excited! - in a rented pale apricot Watters gown from VowtoBeChic.com.

Vanderpump Rules star Scheana Marie's wedding may not have been enduring (she and her husband split two years later), but the peach gowns worn by her 'maids, including costar Ariana, third from left, will stand the test of time.

The Mindy Project star and mom-to-be (center) got to pick her own dress for actress pal Molly Tarlov's wedding - but she and Molly's other BFFs prepped for the big day in matching floral robes from Love Ophelia.

Jerry Hall's daughters with Mick Jagger wore elegantly draped pale blue Vivienne Westwood gowns to stand up for their mom's wedding to Rupert Murdoch.

The bride-to-be wore a white dress and wreath of flowers to serve as a bridesmaid for her younger brother Matthew's big day - perfect for the relaxed outdoor ceremony, which took place in Hunter Valley, Australia.

When Witney Carson chose her bridesmaids, she also guaranteed the dancefloor would be lit. The Dancing with the Stars pro's bridesmaids included fellow dancers Emma Slater, Lindsay Arnold, Brittany Cherry, and Jenna Johnson.

The friendships in Bachelor Nation run deep. So deep, in fact, that Nikki Ferrell had three of the former stars in her bridal party! When Ferrell wed Tyler VanLoo in October 2016, fellow reality stars Kelly Travis, Christy Hansen and Andi Dorfman stood by her side as baby pink gown-clad bridesmaids.

Donald Trump's daughter, Tiffany, spent a picturesque "Saturday down south" serving as mom Marla Maples' sister's bridesmaid in a gorgeous petal pink gown with a side pony, accentuated with a jeweled headband.

There are quite a few perks to having Taylor as your Maid of Honor, as her childhood friend Britany Maack found out. Not only do you get an incredibly heartfelt speech, but you also get an impromptu wedding singer, someone to call in a custom gown for you (they're both in Reem Acra) and someone to bring a Vogue reporter along to document the whole day.

Another star doing triple duty at her best friend's wedding? Victoria, who not only stood up with her pal, but also designed her wedding gown and helped with her shoes. "She was amazing - a true bridesmaid!" Eva told People.

As if it wasn't fun enough to be part of Ciara and Russell Wilson's fairytale wedding in an English castle, the nine bridesmaids -- including the singer and TV star -- received custom gowns from Michael Costello.

Not every bridesmaid adores their outfit, but Lena was so sold on the custom sequin J.Crew pencil skirts each girl wore to stand up with pal Audrey Gelman, she Instagrammed a close-up of the details.

Even before she saw designs, Paris had no qualms about being stuck in a bad bridesmaid gown. "I know that Nicky has impeccable taste so the bridesmaid dresses are going to be beautiful," she told People. The end result? A flowy, powder-blue custom Dennis Basso gown that coordinated with mom Kathy's mother of the bride dress.

High praise from the queen of comedy: Amy dubbed her bud's wedding "the best ever" (and happily wore the strapless chiffon number that went with).

Sofia executed all her bridesmaid duties perfectly, from smiling big in identical buttercup yellow gowns to 'gramming the cake-cutting moment to actually eating the cake to bringing the hottest date. (Wait a minute, is that last one a bridesmaid duty?)

She's all smiles here in her cornflower-blue halter, golden stilettos and freshly-blonde bob, but the actress spent much of her sister Kayleen's Muskoka, Canada ceremony wiping away tears with a tissue.

You never thought it would be tough to spot the Hilton sisters in a crowd, but in this "ready to partayyy" pink-clad coterie of 'maids, they blend in big time!

A winter wedding in May? The "Fergalicious" singer carried a snowflake-esque bouquet and wore a long black gown when she stood up in the wedding of pals Forman Lauren and Angela Weaver in Boca Raton, Florida, on May 2, 2015.

To stand up next to her little sister Solange, (and the rest of the wedding party) Beyoncé wore a figure-hugging white Torn by Ronny Kobo dress.

Tina Knowles's wedding on a yacht may have had the most star-studded wedding party of all time - and, like her daughters before her, Tina opted for an all-white theme.

It's not easy being green, unless you're Eva, who made her mint dress look quite refreshing for a family wedding in May 2015. Posting several Instagrams from the big day, the actress couldn't help but add #blessed to her snaps.

How excited was Rihanna to don her lilac, crystal-embellished Badgley Mischka Couture gown to stand up in the Honolulu wedding of her assistant Jennifer Morales? Judging by her Instagram, very excited.

Though her own wedding is on the horizon, took some time out for her friend's March 2015 nuptials in New Orleans. The lavender-clad Lady Insta'd a pic from the day, writing, "I'll always be right by her side. #MyBestFriendsWedding," and a day later, joked she was still hungover. "What a time!" she added.

Much like another famous British sister act, the supermodel served as her socialite sister Poppy's maid of honor in an equally eye-catching white dress.

Nicole "Snooki" Polizzi's former Jersey Shore party pal stood by her friend's side at her Gatsby-inspired nuptials in New Jersey on Nov. 29. JWoww went glam in a black strapless dress and flapper-inspired headband, and couldn't help but gush about how lovely the bride looked. "Congrats to my BFF @snooki & @JLaValle on their wedding today! She is the most stunning bride," she Tweeted.

Though her own wedding was coming up, LC took time out from planning to stand up in "bestie" Maura McManus's Aug. 16, 2014, wedding in Ojai, California. "I'm pretty sure no bride has ever looked so beautiful," the former reality star wrote of her pal on Instagram. "What a perfect weekend."

Sarah Jessica won the award for most enthusiastic bridesmaid in August 2014, Instagramming up a storm at her friend Melinda Relyea's wedding in Greenwich, Connecticut. "Perfect. The whole affair," she wrote. "#melindaandjamie forever."

Think she brought beau Jose Antonio Baston along as her plus-one? Eva stunned (again!) from head-to-toe in a one-shoulder lilac number at pal Bonnie Rodezno's June 2014 wedding in Los Angeles, according to USA Today. On her arm as she walked down the aisle: one lucky (and adorable!) ring bearer.

Months after welcoming son Ace, Jessica slipped back into a bridesmaid dress for publicist Lauren Auslander's 2013 wedding, which was documented by Martha Stewart Weddings. The fall nuptials sent the veteran bridesmaid to Newport, Rhode Island, where she stunned in a midnight blue off-the-shoulder Amsale gown.

Jennifer happily embraced her supporting role as a bridesmaid in her brother Blaine's Kentucky wedding. The Oscar winner was one of 11 bridesmaids sporting ivory J.Crew dresses at the October 2013 affair, which was featured on the cover of Martha Stewart Weddings's Real Weddings special issue.

It's no surprise that Decker stole some of the spotlight in her pal's wedding album - just not with her supermodel looks. "So I've officially ruined my friend's wedding pics," she wrote on Twitter of the silly snapshot.

She's a good friend! With days to go before the birth of her second child, Jess slipped into a fitted black bridesmaid dress for interior decorator Kathryn Sykora's June 15, 2013, San Diego wedding to Chris Hetherington, a friend of Simpson's husband Eric Johnson.

Lady Gaga kept it decidedly simple - no meat dress or platforms here! - when standing up for a childhood friend's nuptials in Cabo San Lucas, Mexico, in June 2013.

Jump - for their love! Selena played the role of beachy bridesmaid well during a friend's 2011 celebration in Mexico.

Her brother's April 2011 nuptials in Scotland marked the first time that Keira served as a bridesmaid - though she graded her performance as "bad. I don't know what happened. Every drink I had went straight down the front [of the dress] and then the food went straight down the front!" she lamented.

When her sister Felicity celebrated her marriage to Stanley Tucci in London in October 2012, Emily happily donned a white Nanette Lepore dress and joined the rest of the intimate bridal party, which included her other sister, Suzie.

In a plunging blush dress with beaded detail at the waist, Kalmost looked like a bride herself on sister Adriana's wedding day in Los Angeles in June 2012.

At bestie CaCee Cobb's December 2012 wedding to Donald Faison, an expectant Jessica donned a long black dress and walked down the aisle with actor Zach Braff.

She's a costar who cares: Ali stood up in fellow Varsity Blues actress Amy Smart's 2011 wedding to Carter Oosterhouse in Traverse City, Michigan - and two years before, hosted Smart at her own nuptials in Maine.

The star was in 7th Heaven serving as an attendant for her onscreen sister Beverley Mitchell, who got married in Ravello, Italy.

When the actress walked down the aisle on behalf of her publicist in Turks and Caicos in April 2013, she donned a dress that most bridesmaids would happily wear: a $350 magenta Monique Lhuillier creation.

Weeks before welcoming daughter Maxwell in spring 2012, Jessica and her sister served as bridesmaids in friend and former assistant Lauren Zelman's wedding to Breaking In actor Bret Harrison. During the ceremony, at the Parker Hotel in Palm Springs, California, Jessica was "a great sport and kept smiling," and Ashlee minded her son, Bronx, who held the role of ring bearer.

"I was so honored to see my best friend marry her soul mate," the bubbly bridesmaid gushed after her pal Amy Colvin's Beverly Hills Hotel wedding in February 2011. Her favorite moment? When she and the rest of the bridal party grabbed the band's microphones and belted "Total Eclipse of the Heart" in front of all 175 guests.

For the 2008 wedding of her then-stylist Estee Stanley, Ashley wore an elegant gown with an origami detail at the bust - then added a spooky mask to dodge the paparazzi.