Katy Perry - Elton John Oscar Party

Katy Perry sparkles in a Blumarine dress at the Elton John AIDS Foundation Academy Awards Viewing Party, held at the City of West Hollywood Park on Sunday (February 26) in West Hollywood, Calif.

The 27-year-old singer, who wore Miu Miu shoes and carried a Judith Leiber clutch, attended the star-studded event where proceeds from the party help the non-profit organization fund direct patient care and AIDS prevention education.

PHOTOS: Check out the latest pics of Katy Perry

Other celebrities expected to attend include Chace Crawford, Jessica Alba, and Neil Patrick Harris.

Last night Katy was also spotted at the Weinsten pre-Oscar party with Olivia Munn.