Without You David Guetta/Usher
When it comes to Halloween, our favourite celebrities really know how to go all out!
Jessica Alba took inspiration from Absolutely Fabulous for her Halloween outfit as her and a pal dressed up as Patsy and Eddie.
Katy Perry transformed herself into presidential candidate Hilary Clinton by having professional make up artists use prosthetic makeup to make her look like the politician.
Kate Hudson looked like she was having the time of her life when she posed for a picture with Katy Perry, who had dressed up as Hilary Clinton. Many suspected it was Orlando Bloom wearing the Bill Clinton mask, but it was Katy's long time pal and CAA agent Michael Kives.
Kylie Jenner won the seal of approval from Christina Aguilera herself when she dressed up as the singer in her 2002 'Dirty' video. Christina took to Instagram reposting the picture with the caption: "'YAASSSSS".....Killin it @kyliejenner yes to dirrty 2016!! Get it girl!!!"
Demi Lovato and bestie Nick Jonas transformed themselves into Dorothy and the scarecrow for a Wizard of Oz inspired Halloween.
The 'Camp Rock' actress looked more glam than ever when she dolled up as Dorothy from Wizard Of Oz.
The stunning blonde actress put on an eye-popping display as a showgirl with an army of her best pals as they attended a star-studded party.
The 'Keeping Up With The Kardashians' star vamped up her look to become a ghoulish bride, complete with garter and lots of fake blood.
She may be going through a rough time after calling off her engagement to billionaire James Packer, but Mariah put on a brave face as she reunited with ex-husband Nick Cannon as they celebrated Halloween with their two twin children Morocco and Monroe.
The Victoria's Secret model was the living spit of Audrey Hepbrun as she donned a beehive wig, pears and sunglasses to transform into the 'Breakfast at Tiffany's' star.
He's known for flashing his cash, so it only makes sense that boxer Floyd Mayweather dressed up as the richest superhero, Iron Man.