[Image via Dave Bedrosian/Future Image/WENN.]
And her Coldplay hubby, who is often notably absent from Gwynnie's various work-related events, joined in on the festivities!
The pair seemingly entered/exited the party separately (above), but reportedly chilled together inside with various celeb guests like Kate Hudson.
Ch-ch-check out some pics of Gwyn and her musical man at the Goop-centric shindig (below)!
[Image via WENN.]