Kate Walsh: 70's Disco Dance Party Goddess!

Kate Walsh rocks out a big curly blonde wig for her epic 70′s disco dance party held at her home in Los Angeles on Saturday night (April 2).

The 43-year-old actress, who was celebrating her new Boyfriend fragrance, tweeted, “My badass 70′s glam rock disco dance party dance party, benefiting Oceana and B-day girl Jana Huntsinger, my BFF from Tucson: oh, it’s on!!”

Half-way through the party, Kate and a dance partner put on an impromptu disco performance. “Her dance moves were sick,” a partygoer revealed. “Kate killed it on the dance floor.”

Celeb 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 Kate Flannery, Grey’s Anatomy and Private Practice creator Shonda Rhimes, Kate‘s Private co-stars Paul Adelstein, Tracee Ellis Ross, and Taye Diggs (with wife Idina Menzel), and her former Grey’s co-stars Katherine Heigl, T.R. Knight, Kevin McKidd, Kim Raver, Sandra Oh, Sara Ramirez, and Justin Chambers’ wife Keisha.

10+ pictures inside of 70′s disco dance party goddess Kate Walsh…