Lady Gaga: A Decade of Difference!

Lady Gaga and Lindsay Lohan show their support for A Decade of Difference at a concert held at the Hollywood Bowl on Saturday (October 15) in Los Angeles.

The concert celebrated 10 years of the William J. Clinton Foundation and its efforts to improve global health, strengthen economies worldwide, promote healthier childhoods, and protect the environment.

Also pictured inside and attending: Usher, Ellen DeGeneres and wife Portia de Rossi, Ashton Kutcher, and Jason Segel!

15+ pictures inside of Lady Gaga, Lindsay Lohan, and other stars celebrating A Decade of Difference…