Janet Jackson performs 'Nasty.'

1 of 9
Superstar Janet Jackson recently turned 40, and she has so many reasons to celebrate! After gaining 60 pounds, she's lost all the weight. Plus, she's got a new CD, and a man she says is rocking her world!

Twenty years ago, Janet's breakout album Control and her single "Nasty" topped the charts. Today she says she doesn't feel a day over 20...and she's performing the hit song for Oprah's audience! Give her a beat!