These weird and wonderful costumes worn by the likes of Cindy Crawford, Paris Hilton, Kylie Jenner and others are the perfect mix of scary, sexy and fun.
Take our look at the round-up of some of the best costumes worn this weekend.
Kylie Jenner channelled 2009 Christina Aguilera from her Dirty Music video, wearing a bikini top, fake lip and nose ring and adding the trademark PVC red and black chaps. The 19-year-old looked strikingly similar to the pop singer.
Katy Perry and Orlando Bloom dressed as Hillary and Bill Clinton for Kate Hudson's annual Halloween bash. Katy used prosthetics to change her face shape including her nose and jawline. To top off the look she wore a wig and a red two piece suit.
Fashion designer Marc Jacobs dressed up as a female body builder for actress Bette Midler's annual party in New York. Wearing a body suit, nail extensions, a wig and full make-up Marc looked virtually unrecognisable.
Supermodel, and Victoria's Secret angel, Alessandra Ambrosio transformed herself into Jessica Rabbit from the 1988 film Who Framed Jessica Rabbit. Wearing a slinky floor length gown, a red wig and purple gloves she looked every inch the part.
Hosting her 21st annual Halloween party, actress Bette Midler dressed as her character Winnifred Sanderson from 1993 movie Hocus Pocus. She wore a huge red wig and carried a makeshift broom.
Actress Tara Reid combined Halloween with Christmas and came as Santa Clause in a revealing mini skirt and bandeau top. The 40-year-old also wore a white fur trimmed hat and perspex high heels.
The Gone Girl actress and model showed off her curves in a slinky Cleopatra outfit. She wore a black wig covering her long brunette locks and added kohl black eyeliner - a signature of the Egyptian queen.
Singer Mariah Carey dressed up as the devil in a sexy PVC outfit topped of with red horns and matching feathery wings. She celebrated with her ex-husband Nick Canon and their two children.
Model Cindy Crawford and her daughter Presley dressed as a punk rock duo. They both wore patterned flared mini skirts and band t-shirts. Cindy wore her hairy in a messy style with orange streaks through it.
Former reality star and socialite Paris Hilton wore a Little Red Riding Hood outfit with knee high socks, a black corset and a long flowing red cape. She wore her long blond locks loose with a black hair accessory and finished off the look with red lips.