Celebrities Turning 40 in 2012
Credit: Russell Turiak/Getty Images, Ethan Miller/Getty Images
Victoria and Harper Beckham's Adorable Mother-Daughter…
Vanessa Lachey, Katrina Bowden Hitting Everyday Effect NYC…
Jamie Lynn Spears' Daughter Maddie Turns 5! 
Vanessa Hudgens and Ashley Greene Wear Black Bikinis, Learn… 
Watch Miley Cyrus Shake Her Butt in "We Can't Stop" Music… 
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Dwayne "The Rock" Johnson (May 2)
The 6-foot-5 actor and WWE superstar -- a.k.a. "The People's Champion" -- continues to kick butt and take names every time he enters the arena.