Halloween 2015: The best celebrity costumes

Heidi Klum remains the Queen of Halloween thanks to her unrecognizable transformation into Jessica Rabbit. Photo: © Getty Images
Heidi Klum and Gigi Hadid Photo: © Getty Images
"Mic Drop" Katy Perry Photo: © instsgram.com/katyperry
Jennifer Lopez and Casper Smart Photo: © Getty Images
Avril Lavigne Photo: © instagram.com/avrillavigne
Gwyneth Paltrow and daughter Apple Photo: © instagram.com/gwynethpaltrow
Allison Willliams Photo: © instagram.com/aw
Taylor Swift Photo: © instagram.com/taylorswift
Jessica Alba and Kelly Sawyer Photo: © instagram.com/jessicalba
Josh Duhamel, Fergie, David Johnson Photo: © Getty Images
Julianne Hough Photo: © Getty Images
Channing Tatum and Jenna Dewan Tatum Photo: © Getty Images
'Grandfathered' co-stars John Stamos (L) and Josh Peck show off their devilish sides. Photo: © Getty Images
Gwen Stefani Photo: © Getty Images
Emily Ratajkowski Photo: © Getty Images
Mariah Carey Photo: © Getty Images
Nicole Scherzinger Photo: © Getty Images
David Johnson and Paulina Gretzky Photo: © instagram.com/pauliagretzky
Rande Gerber and Cindy Crawford Photo: © Getty Images
Justin Bieber Photo: © instagram.com/justinbieber
The hosts of "The View" turn villainous. Photo: © instagram.com/theviewABC
Darren Criss Photo: © Getty Images
Late night host Jimmy Kimmel tries on Princess Leia's famous buns, while sidekick Guillermo is the perfect Yoda. Photo: © instgram.com/jimmykimmellive
Hugh Grant at the Unicef Halloween Ball. Photo: © Getty Images
Poppy Delevingne pulls off Suicide Squad's Harley Quinn. Photo: © Getty Images
Channing Tatum dressed up as Winnie the Pooh for his daughter Everly's Halloween bash. Photo: © instagram/channingtatum
Model Arizona Muse looks purrfect at the Unicef Halloween Ball. Photo: © Getty Images
Kelly Ripa channels Kim Kardashian for 'Live with Kelly and Michael's annual Halloween show. Photo: © David M. Russell/Disney ABC
Guy Fieri aka Chrissy Teigen turns up in the heat in the kitchen on TV's "The Fab." Photo: © ABC
Tyra Banks (L) takes off as Virgin mogul Richard Branson alongside Chrissy Teigen as Guy Fieri. Photo: © ABC
Former Destiny's Child bandmates Beyoncé (second from left) and Kelly Rowland (far right) with friends La La Anthony and Angie Biyonce Photo: © Instagram
Molly Sims and her eight-month-old daughter Scarlett make a purrfect pair of kitty cats. Photo: © instgram.com/mollybsims
La La Anthony and Ciara Photo: © Instagram
Kourtney Kardashian with her three children Mason, Penelope and Reign and her niece North West Photo: © Instagram
Another shot of Kourtney posing with her children Photo: © Instagram
Liv Tyler Photo: © Instagram
Robert Downey Jr Photo: © Instagram
Miranda Kerr as Marilyn Monroe Photo: © Instagram
Miranda Kerr as Marilyn Monroe Photo: © Instagram
Nina Dobrev and friends were the Spice Girls, with Nina taking on Victoria Beckhams' Posh Spice. Photo: © Splash News
Who's that star? It's AnnaLynne McCord! Photo: © Getty Images
Vanessa Hudgens and her longtime love Austin Butler bring 'Pulp Fiction' to life. Photo: © instagram/vanessahudgens
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