Celebs Send Britney Spears Birthday Love on Twitter! (PHOTOS)

Britney Gone Wild
See Miss Spears' most risque outfits.
Happy birthday to Ms. Britney Spears!

With one of pop music’s biggest icons turning 30 years young on Friday, you best believe that a number of her celebrity friends took the time out to send their well wishes on Twitter.

So, who is singing Brit’s praises?

Justin Bieber, Brit’s touring bud DJ Pauly D, and (our personal fave) her former Mickey Mouse co-star Christina Aguilera all gave her birthday shout outs on Twitter.

To see who else, check out the gallery!