SEEING DOUBLE: THESE STARS WIN HALLOWEEN FOR DRESSING AS OTHER STARS

Check out Kim Kardashlan paying homage to several Hollywood icons, Jessica Biel's hilarious take on husband Justin Timberlake and more stars who have dressed as other celebs for Halloween.

Imitation is the sincerest form of flattery -especially on Halloween.

You know how us mere mortals like to use the spookiest holiday of the year as an excuse to pretend to be someone else? Well, celebrities do, too, with stars like Kim Kardashian West, Lil Nas X, Ciara and others using Halloween as a time to dress up as another star sometimes even dressing up as one of their famous friends for a fun meta moment. Who can forget when Jessica Biel donned a curly hair wig and *NSYNC memorabilia to relive husband Justin Timberlake's boy band glory days? And we still can't get over Kylie jenner's "Dirrty" take on one of Christina Aguilera's most iconic music video looks.

And just this year, Travis Barker and And just this year, Travis Barker and kourtney Kardashian celebrated Halloween early and delivered their take on an infamous punk-rock couple: Sid Vicious and Nancy Spungen.

As we wait to see which other celebrity on-celebrity costumes we'll be getting in 2021, check out all of the stars who have paid homage to their fellow famous folk in Halloweens past...

Bebe Rexha as Anna Nicole Smith

The pop star channeled the late Anna

Nicole Smith for Halloween, recreating the Playboy Playmate's infamous wedding in 1994 when she married 89 year-old billionaire businessman, J. Howard Marshall.

Kourtney Kardashian and Travis Barker as Sid Vicious and Nancy Spungen

Just days after getting engaged, Kravis

decided to celebrate spooky season early by dressing up as another iconic (though tragic) couple.

"Throw away the key," Travis wrote on Instagram after revealing his outfit. Kourtney added, "Till death do us part."

Sid Vicious, whose real name is Simon John Ritchie, was a member of the punk band Sex Pistols, and Nancy was his girlfriend. In 1978, she died by stabbing, with Sid suspected of her murder. He died of an overdose in 1979.

For the unforgettable look, the Blink-182 rocker opted for black clothing from head-to-toe with a cigarette for an accessory. As for Kourtney, she sported a black, mesh short-sleeve top with a black,mesh short-sleeve top with a matching bra underneath. When it came down to glam, Kourtney's blond wig was perfected by hairstylist Glen Coco and Tonya Brewer created her makeup look for the night.

The pair even sported handcuffs from Enfants Riches Déprimés to re-create looks from the 1986 feature film Sid and Nancy, which explored the doomed real life relationship.

Ciara and Russell Wilson as Beyoncé and Jay-Z

Talk about paying attention to detail!

The "Goodies" singer and Seattle Seahawks quarterback went to great lengths for their 2019 costumes, taking up the ultimate challenge of dressing up as Bey and Jay.

Ciara and Russell shared photos and videos of them recreating the musical power couple's "Ape Sh*t" music video.

The two recreated one specific scene from the video-the one where Bey and Jay-Z are seen standing in front of Leonardo da Vinci's "Mona Lisa" at the Louvre Museum in Paris. But in case you didn't notice-instead of the Mona Lisa the Wilsons are standing in front of a portrait of the former President of the United States Barack Obama and former First Lady Michelle Obama.

"From the Wilsons to the Carters to the

Obamas... Much Love & Respect. We goin Ape $#!% # Happy Halloween," Ciara captioned one of her Instagram posts.

Kaitlyn Bristowe and Jason Tartick as Jennifer Aniston and Brad Pitt

The Bachelor Nation couple dressed up as the famous exes for Halloween 2020, reenacting a virtual reunion that was part of a Fast Times at Ridgemont High table read benefit that they had taken part in over a month prior.

Kim Kardashian as Aliyah, Selena, Madonna and Cher

In 2017, the Keeping Up With the Kardashians star decided to pay homage to several icons, including Madonna channeling her Marilyn Monroe-like "Material Girl" look and the late Aaliyah from her 2000 music video "Try Again."