Celebrities dressed as other stars for Halloween, Apparently, we're not the only ones who take inspiration from our favorite stars when it comes to creating the perfect Halloween costume. Keep clicking to see Katy Perry, Adam Levine, Fergie and more celebs dressed up as other stars for Halloween, starting with Nicole Richie, who was a dead ringer for Jennifer Lopez on Halloween 2011.
Ellen Degeneres posed with the inspiration for her costume -- Sofia Vergara -- while hosting a Halloween-themed episode of her eponymous talk show in late October 2013.
In 2013, Paris Hilton recreated Miley Cyrus's famous MTV Video Music Awards bear leotard for the Playboy Mansion's annual Halloween bash.
Adam Levine and ex-girlfriend Anne V dressed up as Guns N' Roses frontman Axl Rose and model-actress Stephanie Seymour from GnR's "November Rain" music video at Maroon 5's 2011 Halloween party.
Katy Perry honored the late Freddie Mercury while hosting a Halloween party in 2008. Doesn't she look just like the mustachioed Queen frontman?
We hardly redneckognize Fergie in that getup! The singer dressed up like child beauty queen Honey Boo Boo at Heidi Klum's 2011 Halloween party.
Kelly Osbourne got a helping hand from Christian Siriano on Halloween 2013. The designer helped the "Fashion Police" host bring her Christina Hendricks Halloween costume to life by recreating the exact same dress the "Mad Men" actress wore to the Emmys that year. "I hope I did her justice!! ps I had to wear 3 bras!!" Kelly captioned this photo on Instagram.
Happy Halloween and may you all find your 'Islands In The Stream' #Halloween," LeAnn Rimes captioned this TwitPic of herself and hubby Eddie Cibrian dressed up as "Islands in the Stream" singers Kenny Rogers and Dolly Parton on Halloween 2013.
In 2013, Miley Cyrus recreated Lil Kim's 1999 MTV Video Music Awards look for Halloween.
Matthew Morrison brought sexy back by dressing up like a vintage Justin Timberlake on Halloween 2012.
It's the Guns N' Roses reunion we've all been waiting for! Cindy Crawford and hubby Rande Gerber dressed up as Slash and Axl Rose at a Halloween party in 2013.
Carmen Electra channeled "California Gurl" Katy Perry while hosting Svedka vodka's 2014 Halloween Soirée.
At a 2012 Halloween bash, Chord Overstreet paid homage to his idol, Brad Pitt, by dressing up like the A-lister from his memorable Chanel No. 5 commercials.
Kelly Ripa and Michael Strahan dressed up like Miley Cyrus and Robin Thicke from their memorable MTV Video Music Awards performance while shooting the Halloween episode of "Live! with Kelly and Michael" in 2013.
Who's that girl? It's Matt Lauer! The "Today" show host was the mirror image of Pamela Anderson in a red "Baywatch" one-piece swimsuit on Halloween 2013.
Diddy dressed up as Prince at the Playboy Mansion's annual Halloween party in 2012. Did he party like it was 1999? We hope so!
Bethenny Frankel found out firsthand whether or not gentlemen really prefer blondes when she dressed up like Marilyn Monroe at Heidi Klum's annual Halloween bash in 2013. The reality-TV star donned a recreation of the late actress' iconic hot pink dress from her 1953 film "Gentleman Prefer Blondes."
Imitation may be the sincerest form of flattery, but Donald Trump didn't seem too flattered when Katie Couric dressed up as him for a Halloween-themed episode of the "Today" show in late October 2004.
Awkward! Deryck Whibley and his fiance, model Ariana Cooper, dressed up as the Sum41 rocker's ex-wife, Avril Lavigne, and the "Sk8er Boi" singer's second husband, Chad Kroeger, on Halloween 2012. Needless to say, the Nickelback frontman was none too thrilled by the homage.
Who knew Pauly D was a Belieber? The "Jersey Shore" alum dressed up as Justin Bieber at a Halloween party in 2010.
She may not have been "Born This Way," but with the help of some wardrobe experts and a platinum blond wig, Meredith Vieira looked just like Lady Gaga at the 2010 Grammys on Halloween that year.
Amber Rose did Slash justice at Heidi Klum's annual Halloween party in 2011.
Miley Cyrus looked bootylicious dressed up like Nicki Minaj for Halloween 2012.
Paris Hilton looked just "Like a Virgin" dressed up as Madonna during the 1984 MTV Video Music Awards at Treats! magazine's 3rd annual Trick or Treats! Halloween Party in 2013.
The Bachelor" alum Melissa Rycroft dressed up like another reality-TV star -- Snooki! -- at the 17th annual Dream Halloween party in 2010.
On Halloween 2011, Kelly Ripa and Nick Lachey dressed up as Kim Kardashian and her ex-husband, Kris Humphries, on their wedding day.
Al Roker is no fool! The "Today" show anchor dressed up as Mr. T on Halloween 2013.
Food Network star Giada DeLaurentiis looked just like a "Teenage Dream" dressed up as Katy Perry on Halloween 2011.
You may now kiss the bride! Matt Lauer and Ann Curry recreated the royal wedding by dressing up as Prince William and Duchess Kate on Halloween 2011.
"Another pic of Robin and Miley 2.0 - with @crystalhefner," Playboy founder Hugh Hefner captioned this TwitPic of himself and his wife, Crystal Hefner, dressed up as Robin Thicke and Miley Cyrus on Halloween 2013.
