Demi Lovato performed a mashup of two songs off Lady Gaga’s Mayhem during the singer’s visit to BBC Radio 1 Live Lounge. It’s ...

Demi Lovato covered Lady Gaga for BBC Radio 1, performing a medley of Gaga's songs "Disease" and "Perfect Celebrity" from the ...

The screen cut to Gaga live backstage, as she removed her makeup while the song How Bad Do You Want Me began to play. She then made her way back on stage to perform the rest of the song rocking a bare ...

If you thought the duet between Lady Gaga and Bradley Cooper during Sunday's Oscars was more than just a performance, you wouldn't be the only one. Social media went wild over the pair's chemistry as ...

During Poker Face, the two sides face each other on a giant chess board; as Gaga is confronted by a doppelgänger dressed head ...