Saturday's 20th annual Life Ball was filled with celebrities, including singer Ricky Martin, former President Bill Clinton and Eurovision Song Contest winner and drag queen Conchita Wurst.

At least $400,000 was raised during the fundraiser, considered Europe's largest charity event for AIDS research.

Austria played host to this year's event with the theme “Garden of Delights.”

Wurst performed her winning Eurovision Song Contest entry Fly Like A Phoenix.

(Related: Drag queen Conchita Wurst wins Eurovision Song Contest.)

Clinton reminded attendees of the fundraiser's purpose: “So in all the joy of this evening, never forget what lies behind it. The determination of every person giving here to give every child a better chance. Thank you so much.”