On Saturday, April 2nd, Katherine Heigl attended 42 Below Vodka's celebration for Kate Walsh's Boyfriend fragrance in Los Angeles. She joined her friend and former co-star at the retro themed disco party which was held at Walsh's home. Attending the event were a host of friends and Grey's Anatomy alumni including T.R Knight, Kevin McKidd, Sandra Oh, Sara Ramirez and Shonda Rhimes.

Other celebrity guests, who sipped 42 Below Vodka cocktails and danced to tunes by DJ Jordan Masterson, included Zachary Quinto, Mr. Sunshine’s Allison Janney, The Office’s Angela Kinsey and Katherine's recently hitched Roswell and Life As We Know It co-star Majandra Delfino. Heigl was a bridesmaid at Delfino's wedding in Miami recently.

Katherine Heigl Poses With Majandra Delfino & TR Knight At The Below Vodka's Celebration For Kate Walsh's Boyfriend Fragrance Photo: Casey Rodgers/AP
Katherine Heigl At The Below Vodka's Celebration For Kate Walsh's Boyfriend Fragrance Photo: Casey Rodgers/AP

Boyfriend launched on HSN in November and hit Sephora shelves in February. Check out images and photographs from the event at People and Just Jared.