This happened last night, and - SHOCKER! - the Warriors don't have practice today!
Looks like a good time was had by all, to say the least.
Hayley Williams from Paramore was on hand to sing "Happy Birthday," and the Bay Area's own E-40 performed live.
Golden State dance party, anyone? Gotta love Steve Kerr's moves!
If you have a good bit of time on your hands, here's a collection of Snapchat videos documenting the night from beginning to end:
Otherwise, TMZ has done a solid job of summarizing the affair's highlights: