Elton John rings in 70th birthday with Gaga, Wonder, Perry

Singer Elton John celebrated 70th birthday by throwing a star-studded bash which was attended by A-list musicians like Stevie Wonder, Lady Gaga, Katy Perry and more.
The party also marked 50th anniversary of John's partnership with songwriter Bernie Taupin, reported AceShowbiz.
Gaga also performed her greatest hits "Bad Romance" and "Born This Way" at the bash.
She even teamed up with Wonder to honour John with iconic "Happy Birthday" song. Other musicians who performed at the bash were Ryan Adams and Rosanne Cash.