WATCH: Adam Lambert Performs Epic Mashup At GLAAD Benefit

Adam Lambert was amongst many celebrities who showed up to support the GLAAD 'Believer' Spirit Day Concert, performing a mashup of 4 Non Blondes’ hit “What’s Up?” and Bon Jovi’s “Livin’ On A Prayer” on Wednesday at The Sayers Club in Los Angeles.

The event helped to raise over $100,000 (U.S) for GLAAD’s anti-bullying efforts. Other performances and attendees included Courtney Love, Carly Rae Jepson, Hailee Steinfeld, Troye Sivan, 5 Seconds of Summer's Ashton Irwin, Tinashe, and more.

Watch the performance below: