A judge in California overturned the ban on gay marriage on Thursday--and Hollywood is celebrating! Chief U.S. District Judge Vaughn Walker ruled that Proposition 8 was unconstitutional.

Celebrities immediately shared their delight on Twitter. Minutes after the ruling was announced, Kelly Osbourne Tweeted, ""So happy over the news on prop8 its about time!" Ellen DeGeneres also shared her happiness on Twitter, saying, "This just in: Equality won!"

More celebrity reaction after the jump.