Stepping out to support the arts, some of Tinseltown's hottest stars headed to the MOCA 35th Anniversary Gala in Los Angeles on Saturday (March 29).

Pressing the flesh with many of the guests, Pharrell Williams wore a black version of THAT hat with a black jacket, blue T-shirt, and a few assorted necklaces.

Thrilled to celebrate the MOCA, Katy Perry donned a long black dress open at the sides of the skirt to reveal a bright yellow lining.

Nearby Dita Von Teese exuded Hollywood glamor of yesteryear with a sultry twist in a lavender flowing gown while Dianna Agron chose a funky sleeveless black and gray dress, belted at the waist with black boots.

At the gala, the guests got a preview of the highly-anticipated Mike Kelley exhibition, which opens to the public on Monday.