A little over two weeks into filming Grassroots, the entire cast and crew decided some celebration was in order and enlisted the Vitaminwater Social Club to help plan a Sunday night fete. Cue the outdoor barbecue, coterie of local DJs, photo booth and endless supply of flavored H2O. Director Stephen Gyllenhaal was joined by cast members Jason Biggs, Joel David Moore, Christopher McDonald, Emily Bergl and DC Pierson, who all partied with a notable crowd of Seattleites like PNB principal dancers Lucien Postlewaite and Olivier Wevers, Dan Savage of The Stranger, and former Bachelor Jason Mesnick and wife Molly Mesnick.

Check out our slideshow (above) for highlights from Sunday night’s festivities.

Photos by Tiffany Wan.