The supermodel wore a "FemBot" costume inspired by the characters in the movie "Austin Powers."
The sexy suit consisted of a transparent pink dress, adorned with pink fuzz on the bust and hem, which was worn over a pair of visible lace underwear and a pair of shiny gloves. The little minidress wore Jenner's long legs.
The 22-year-old rocked a blonde wig with fringe and curls at the tips, adding a fluffy pink clip to her hair.
For the shoes, she selected soft pink sandals that matched perfectly with her dress.
The look was a take on the look of "FemBot", with Jenner's hair and mini dress imitating the styles worn by the actresses in the movie "Austin Powers".
Jenner took pictures with a friend who wore a set of the Austin Powers, which was made with a velvety blue suit and a ruffled white shirt similar to the character in Mike Meyers' movie.
Casamigos was founded by George Clooney and the husband of Cindy Crawford, Rande Gerber, and the Halloween party of the luxurious tequila brand was full of stars.
Clooney and Gerber were twinned in pilot suits, while Crawford wore a 1960s-inspired minidress and white Go-Go boots, with accessories with a stewardess hat and a name tag.
Click on the gallery to see 20 of the best celebrity Halloween costumes over the years.
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20 amazing Halloween costumes of celebrities from the past