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MELISSA MCCARTHY & SANDRA BULLOCK
Can't fool us! Undercover fishermen – er, fisherladies? – Bullock and her bestie are spotted taking little Louis, 3, around Toluca Lake, Calif., for some treats on Thursday afternoon.
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Wonder if Alyson Hannigan and Alexis Denisof's daughters Satyana, 4, and Keeva, 17 months, had the luck of the Irish while trick-or-treating in Brentwood, Calif., on Halloween?
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BARACK & MICHELLE OBAMA
Trick-or-treaters to D.C.'s 1600 Pennsylvania Avenue didn't receive king-size candy bars, but they did get to meet the president and first lady and open up bags filled with dried fruit, MampMs and a butter cookie shaped like the White House. Sweet deal!
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RYAN SEACREST & AARON PAUL
They come in peace – and in suits! Dapper buddies Seacrest and Paul put their heads together at the Treats! magazine and Jose Cuervo Cinge bash in L.A. on Halloween night.
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JIMMY KIMMEL & MINDY KALING
It's a Disney date for the late-night host and TV actress, who do a little gender bending as Snow White and Captain Hook on Thursday night in L.A.
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While dad Matthew seemingly skips out on the festivities, mama Camila totes cute kids Levi, 5, Vida, 3½ and Livingston, 10 months, for a Thursday afternoon trick-or-treating trip in Malibu, Calif.
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TABITHA & LORETTA BRODERICK
They're two cute! Sarah Jessica Parker and Matthew Broderick's twin girls, 4, are pretty as a picture during a trick-or-treat outing in New York City on Thursday.
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THE TODAY CAST
It was a true #throwbackthursday for the morning show crew, who dressed as old TV stars for their annual Halloween extravaganza in N.Y.C. Though we loved Wilma amp Betty and Laverne amp Shirley, it's Matt Lauer who earned the most points for his Baywatch-era Pamela Anderson (nice legs!).
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The thigh's the limit for the recently engaged Glee actress. Dressed as a sexy dead-ringer for cartoon criminal mastermind Carmen Sandiego in Los Angeles on Oct. 27, Rivera turns way too many heads to be a real undercover agent.
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Look who got a head-start on Halloween! A '70s athlete-style mullet, headband and mustache fail to disguise the Ray Donovan actor en route to an Oct. 27 party in N.Y.C.
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JWOWW & SNOOKI
The Jersey Shore double-act takes their Alice in Wonderland theme one step further at their Oct. 25 Night of the Living Drag party in N.Y.C., transforming into a mischievous Tweedledum and Tweedledee after their regal Red Queen and White Queen arrival.
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ISLA FISHER & SACHA BARON COHEN
Leave it to one of Hollywood's hottest comedy couples to come up with a truly off-the-wall Halloween look! The actress covers up with a crazy cat-lady ensemble in Beverly Hills on Oct. 25, while hubby Baron Cohen dresses in drag.
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He scored top marks with Amber Riley on Dancing with the Stars this week, but Hough rocked his inner rebel as an '80s punk in Beverly Hills on Oct. 25.
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The statuesque supermodel ditched glamour for grunge to channel Guns 'n' Roses guitarist Slash, completing her ensemble with hubby Rande Gerber as the band's flame-haired frontman Axl Rose.
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Hot mama! The Brazilian supermodel smolders as the Queen of Hearts at the star-studded 2013 Casamigos Halloween Party in Beverly Hills on Oct. 25.
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JENNIFER, JC & MATTHEW
Jennifer Morrison, JC Chasez and Matthew Morrison enjoy an additional 15 minutes of fame Oct. 26 as Clueless's Cher, a Baywatch lifeguard and Andy Warhol, respectively, at Matthew Morrison's 4th Annual Halloween Masquerade party in Hollywood. The Dos Equis-sponsored event also brought out the likes of Ashlee Simpson, Brittany Snow and Chace Crawford.
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The Glee star is a Force to be reckoned with at Morrison's Oct. 26 masquerade party. "This year for Halloween I decided to go as a character whose sex appeal is always ignored...I'm Sexy R2D2!" Colfer Tweeted.
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JESSE & JUSTIN
It's a crime to look this stylish on Halloween! Bow-tie-sporting Jesse Tyler Ferguson and husband Justin Mikita make for a dapper Batman and Robin at Morrison's Oct. 26 bash.
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JWOWW & SNOOKI
They're getting curiouser and curiouser! Jersey Shore alums Jenni "JWoww" Farley and Nicole "Snooki" Polizzi transform into Alice in Wonderland's Red and White queens at the Oct. 25 Night of the Living Drag Halloween party in N.Y.C.
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Did the devil make him do it? Stamos busts out his best Beelzebub for an Oct. 25 celebration in Los Angeles.
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The former 'NSYNC-er gets into the "schwing" of things as Wayne's World's Garth at Fred and Jason's 8th Annual "Halloweenie" Holiday Concert in Los Angeles on Oct. 25.
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NICOLE "SNOOKI" POLIZZI
There's no place like home! Taking a break from Dancing with the Stars's glittery ensembles to slip into a more seasonal costume, Snooki turned into The Wizard of Oz's Toto-toting Dorothy and hit the yellow bricks of Whippany, N.J., in October. Her entourage? Fiancé Jionni LaValle (aka the Scarecrow) and their 14-month-old son Lorenzo, who made for a cuddly little Cowardly Lion.
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Hot dame! Osbourne pumps up the volume on her purple hair and dresses up as Australian comedic personality Dame Edna for a night out at the Oct. 19 M.A.C. Cosmetics and Rick Baker Monster Mash in Glendale, Calif.
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AMY ADAMS & AVIANA
While Adams goes for the low-key look of World War II icon Rosie the Riveter, her daughter, 3, gets in touch with her inner villainess as Sleeping Beauty baddie Maleficent for an Oct. 19 bash in Los Angeles.
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Bibbidi-bobbidi-who? The domestic doyenne puts a spell on partygoers at the Oct. 20 Hub Network Halloween bash in Santa Monica, Calif.
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BETHENNY FRANKEL & BRYN
What a pretty pair! Frankel, in a feathered mask, and her 3-year-old daughter, dressed as a butterfly, show spook-tacular spirit as they hit the streets of N.Y.C. on Oct. 16.
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JASON & NAOMI PRIESTLEY
Brandon Walsh, is that you? The actor and his wife are hard to recognize (we suppose that's the point!) at the Oct. 19 M.A.C. Monster Mash in Glendale, Calif.
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GAVIN & ZUMA ROSSDALE
Someone really loves his red superheroes! Just as he did for dress-up day at school last May, 5-year-old Zuma dons an action figure costume again for an Oct. 19 Studio City, Calif., party, accompanied by rocker dad Rossdale, who dresses as his cool self.