1 of 25
MICHELLE VS. LINDSAY
Williams celebrated the premiere of her film Synechdoche in her Alexander Wang dress in October, while Lohan attended an Oscars party this weekend in her draped white minidress.
2 of 25
RACHEL VS. JESSICA
The Brothers Bloom star hit the film’s London premiere in October in her RM by Roland Mouret dress, while the actress dazzled at the Vanity Fair Oscar party on Sunday in her asymmetrical frock.
3 of 25
KRISTEN VS. ELIZA
The Twilight star promoted the film in Paris in her Camilla and Marc dress, while the Dollhouse actress hit a T-Mobile party over All-Star weekend in her striped frock.
4 of 25
MANDY VS. ROISIN
The newly engaged star wore her Preen dress to an art opening in L.A. last year, while the British singer attended the line’s N.Y.C. show last week with her racy laced-up frock under a jacket.
5 of 25
EVA VS. LINDSAY
Longoria Parker sizzled at a charity event earlier this month in Miami in her Matthew Williamson dress, while Lohan helped the British designer celebrate his new N.Y.C. store in the beaded coral frock.
6 of 25
CAMERON VS. BETHENNY
The actress showed off her flawless figure in her Zac Posen dress at an L.A. premiere last May, while the Real Housewives of N.Y.C. star hit a New York premiere in her red sheath this month.
7 of 25
JESSICA VS. ADRIENNE
The singer performed on Dancing with the Stars in her BCBG dress in September, while the Cheetah Girl hit a Victoria’s Secret party this week in her one-shoulder black dress.
8 of 25
DEMI VS. KEKE
The Disney star paired her Camilla & Marc dress with gold heels for the premiere of Twilight, while the True Jackson actress paired her ruffled white dress with strappy sandals for the NAACP Image Awards.
9 of 25
RIHANNA VS. ROSARIO
The singer stunned in her emerald green Dolce & Gabbana gown at the World Music Awards in Monaco in 2007, while the actress dazzled at the SAG Awards in her champagne version this week.
10 of 25
DIANE VS. MARISA
The actress pairs her ivory Giambattista Valli dress with maroon heels for a Parisian premiere, while the Oscar nominee hit an inaugural gala in the black version of the full-skirted frock.
11 of 25
AMERICA VS. KELLY
The Ugly Betty star was chic in her Diane von Furstenberg dress at the ALMA Awards, while the British TV host added a nautical touch to her black-and-white frock at the International Boat Show in London.
12 of 25
GABRIELLE VS. LISA
The BET Honors host was glam in her black Reem Acra gown, while the House doctor sizzled in her red one-shouldered version at the SAG Awards.
13 of 25
LAURA VS. ALICIA
The Golden Globe winner celebrated the Critics’ Choice Awards in her Malandrino gown, while the Law & Order: Criminal Intent actress attended an inaugural gala in her color-blocked one.
14 of 25
KATE VS. HEIDI
The actress paired her Chloé shorts with a matching blazer from the French line at a Blackberry party in October, while the reality star topped her scalloped shorts with a sheer shirt and cardigan for a stroll in L.A. this weekend.
15 of 25
TAYLOR VS. LISA
The country star attended the CNN Heroes gala in her Trina Turk dress, while the actress promoted her exercise video in the black-and-white frock.
16 of 25
JENNIFER VS. LINDSAY
The House resident paired her 3.1 Phillip Lim dress with pearls for the designer’s store opening in L.A., while the Lipstick Jungle fashionista attends a Hornitos party in her ruffle-front frock.
17 of 25
KERRY VS. PAZ
The star swept down the red carpet at Cannes in her Louis Vuitton gown in May, while the Spanish actress wore the runway version of the gown to an awards show in Madrid in November.
18 of 25
HALLE VS. ABBIE
The star showed off her body after baby in her gunmetal Calvin Klein dress at the brand’s anniversary bash in September, while the Australian actress picked the mauve version for a Calvin Klein party in Australia in December.
19 of 25
HILARY VS. BROOKE
The Oscar winner attended a charity event at Saks Fifth Avenue in February in her Jill Stuart dress, while the Lipstick Jungle star unveiled the Godiva Decadence suite in N.Y.C. last week in her draped gray dress.
20 of 25
VANESSA VS. JENNIFER
The High School Musical 3 star celebrated her 20th birthday in her Elizabeth and James top, while the new mom hit the streets of L.A. in her flowing floral top a few weeks later.
21 of 25
FERGIE VS. KIM
The singer rang in the New Year in Las Vegas in her Ina Soltani minidress, while the reality star attended a Super Bowl party this weekend in her feathered black satin dress.
22 of 25
TARAJI VS. DEBRA
The Best Supporting Actress Oscar nominee heated up the Eagle Eye premiere in September in her Black Halo dress, while The Starter Wife star picked the light blue version of the ruffled dress for the Avakian boutique opening in December.
23 of 25
IMAN VS. JENNIFER
The ageless model pairs her Rachel Roy dress with opaque tights for the Black Girls Rock! Awards in N.Y.C. in November, while the Sugarland singer kept her accessories minimal with her beaded minidress at the Grammys.
24 of 25
AUDRINA VS. ASHLEY
Just in time for Valentine’s Day! The reality star advertises for Love Potion No. 9 in her Wildfox T-shirt at a fashion party, while the High School Musical 3 star picks the pink version for running errands in L.A.
25 of 25
AGYNESS VS. M.I.A.
The British supermodel dared to bare in her House of Holland sheer dress for the designer’s afterparty in London, while the pregnant rapper hit the Grammy stage (on her due date!) in her strategically dotted dress.