Gaga & Wonder Perform At Elton John's 70th Birthday Bash
When you're Elton John, you're bound to have a pretty impressive birthday party, and John's 70th bash was nothing less than that over the weekend.
Lady Gaga and Stevie Wonder teamed up to sing "Happy Birthday" to Elton at the party in Los Angeles on Saturday.
Gaga personalised the performance, occasionally changing the lyrics from "Happy birthday to you" to "Happy birthday Elton".
Other well-known celebs who attended the birthday bash included Katy Perry, Jon Hamm, James Corden, Rob Lowe and Roseanne Cash.
Gaga also performed a piano-only mini-performance of her hits "Bad Romance" and "Born This Way" at the illustrious event.
Watch at top, and below.