Did you know these celebrities are out? Celebs We Didn't Know Were Gay!

#1 Sir Ian McKellan

He's never really kept it a secret, but you may have missed the Anderson Cooper episode where the Hobbit star officially outed himself a few months ago.

#2 Matt Dallas

The "Kyle XY" star came out of the closet surreptitiously on Twitter early in January 2013 when he let the world know that he was marrying his long-time love -- musician Bill Hamilton.

#3 David Hyde Pierce

David Hyde Pierce has never really kept his sexuality a secret. But he's one of many Hollywood stars that choose not to discuss his private life at all. Consequently, many of his fans still don't know that he's gay.

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