Lifestyle Holidays & Occasions 9 Last-Minute Celebrity Halloween Costumes That Are Already in Your Closet By Claire Stern Claire Stern Claire Stern is the Deputy Editor of ELLE.com. Previously, she served as Editor at Bergdorf Goodman and was the Associate Editor at InStyle. Her interests include fashion, food, travel, music, Peloton, and The Hills—not necessarily in that order. InStyle's editorial guidelines Published on September 29, 2017 @ 01:47PM Pin Share Tweet Email Trending Videos Photo: Jun Sato/ WireImage; SMXRF/Star Max/GC Images; Bryan Steffy/Getty Sort of like your wedding, Halloween demands that you mull over your outfit months in advance, even though you're most likely to only wear it once. If you don't feel like pulling out all the sartorial stops for what's not widely considered the most important day of your life, that's more than okay —you can still easily rustle up something presentable, and, more importantly, easily recognizable by dressing up like a celebrity in their most iconic look. Chances are you already have the makings of a great costume in your closet. VIDEO: A Brief History of Heidi Klum's Halloween Costumes Take notes below. 01 of 09 BRITNEY SPEARS The keys to transforming into America's pop princess? A gray cardigan, a white button-down shirt (tied ever so seductively around the waist), a hot pink bra, a black miniskirt, knee-high socks, clunky black shoes, and pigtails. Do not—I repeat—do not forget the pigtails. 02 of 09 ARIANA GRANDE Kevin Mazur/Getty Grab a form-fitting black minidress and high heels and tie your hair into an alarmingly high ponytail. Cat ears optional. 03 of 09 SIA Bryan Steffy/Getty The wig says it all, really. (But if you can't locate a wig store in time, mega bangs, black and white hairspray, and the largest bow humanly possible will do.) 04 of 09 DAFT PUNK Michael Kovac/Wireimage Throw on a black suit and borrow your brooding biker friend's helmet. 05 of 09 PARIS HILTON Jun Sato/ WireImage Dig up the Juicy sweatsuit hiding in the back of your closet, grab a pair of oversize sunglasses, and a blonde wig (if you're not a natural blonde). Bonus points for a chihuahua. 06 of 09 HILLARY CLINTON Cindy Ord/Getty Wear a colorful pantsuit, a bob wig, and walk with purpose, ideally to the White House. 07 of 09 KIM KARDASHIAN WEST SMXRF/Star Max/GC Images Straighten your hair, slip on a tight, cleavage-baring (and preferably nude) dress, and finish the look with peep-toe boots (and a phone ripe for selfie-taking). 08 of 09 LADY GAGA Shuji Kajiyama/AP/REX/Shutterstock A pink hat, a pink blazer, extreme high heels, and—boom!—you're basically Lady Joanne. 09 of 09 TAYLOR SWIFT taylorswift/Instagram Cement your reputation as a Halloween costume savant with slicked-back wet hair, a gray ripped sweatshirt, a choker necklace, red lipstick, and a brand-new persona.