Justin Timberlake plays Napster founder Sean Parker in the new film The Social Network, so for Halloween the real-life Parker, 30, decided to dress as the singer, 29.
Sporting blonde curly hair, Parker hit Heidi Klum's annual Halloween bash Sunday at NYC's Lav, wearing a Timberlake getup.
PHOTOS: Stars' funniest Halloween disguises!
Parker recently critiqued Timberlake's performance in The Social Network.
"It's a great performance of a character that isn't me," he told UsMagazine.com.
PHOTOS: Us readers share their best celeb Halloween costumes
Should Timberlake be nominated for an Academy Award?
"That's a good question," Parker told Us before laughing. "It's not my industry."
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
Get the engagement scoop on Replay hosted by Wonderwall's Kirby Kristen.
Get the scoop on the Duke and Duchess of Cambridge's 2014 Royal Tour on Replay hosted by Wonderwall's Kirby Kristen.
The actress and New York Times best-selling author talks to WW's Chris Gardner about her new book, "The Kind Mama," having more kids, and a "Clueless" sequel...
Get the scoop inside Porsha Williams and Kenya Moore's fight and much more on Replay hosted by Wonderwall's Kirby Kristen.
Victoria Beckham, Rosie Huntington-Whiteley and Melissa Joan Hart toast their birthdays on today's Celebs Gone Social hosted by Wonderwall editor Chris Gardner.
Get the details inside Gwyneth Paltrow and Chris Martin's shocking split on Replay hosted by Wonderwall's Kirby Kristen.
Justin Bieber makes a surprise appearance at Coachella where Selena Gomez happens to be hanging out with the Jenner sisters on Celebs Gone Social.
© 2014 Microsoft