Wigging Out! 12 Celebrities Who Opted For Fake Hair Up There

Hair today, gone tomorrow! Check out with stars have switched up their looks with wigs.

Tom Hanks slayed as Buffy in Bosom Buddies, an early '80s sitcom about two ad men who had to dress as women in order to live in an all-female residence during a housing shortage.

Pamela Anderson opted for luscious long blonde locks when she attended a 2009 fashion show — a far cry from her current short 'do.

Angelina Jolie had to be blunt in her role as Evelyn Salt in the 2010 movie Salt.

Beyonce often spent time in her mom's hair salon while growing up in Texas. "I was always messing with my hair when I was a kid," says the singer, who still loves to play with her hairstyles. "One of the worst things I did was cut my ponytails off."

Jennifer Aniston traded in her famous blonde locks for a brown wig while shooting Squirrels to the Nuts in summer 2013.

Lady Gaga opted for a big bouffant while out and about in London recently. "Even though I'm changing all the time, I'm always thinking of iconography—which is repetition of images—so I'm always different," explains the singer.

Jimmy Fallon donned a wig and mustache for a segment on The Tonight Show.

Rapper Nicki Minaj loves to get crazy looks by wigging out. "Color makes me happy. It really excites me," she reveals. "I am a very visual person and when I look in the mirror, and I see green or I see pink, it does something to my attitude. It makes me feel positive."

Alec Baldwin once put on a gray wig in order to channel performer Tony Bennett during a skit on Saturday Night Live.

James Franco let his hair down and looked very pretty in pink while hosting the 83rd Academy Awards with actress Anne Hathaway in 2011.

David Hasselhoff sunk his hook into channeling a pirate—curly hair and all—when he celebrated the launch of Peter Pan at London's New Wimbledon Theatre in 2010.

Katy Perry got goth with her fake long dark tresses at the 2010 Teen Choice Awards in Universal City, California.