On opposite coasts last night, the young patrons of two major museums threw their annual fundraising shindigs. In the East Coast, the New Yorkers broke bread for the Guggenheim Museum's Young Collector's Council. Twenty-five hundred miles away, a Silicon Valley-heavy group raised money for the Junior Committee of the Fine Arts Museums of San Francisco at their Mid-Winter Gala. The star power was dimmed at both - this isn't the Costume Institute gala, after all - but there was a Hollywood name or two thrown into the mix. No one, though, went home empty handed.

Tribes:
New York: Park Avenue socials and the artists who love them.
San Francisco: Tech bros and the gals who love 'em.

Your Party Hosts
New York: Sarah Arison, Laura de Gunzburg, and Nell Diamond San Francisco: Vanessa Getty and Trevor Traina

The A-List
New York: Leandra Medine, Claire Distenfeld, Dalia Oberlander, Chloe Wise. San Francisco: Kevin Systrom (chief executive of Instagram); Marissa Mayer (Yahoo); Travis Kalanick (Uber), Jeremy Stoppelman Yelp); more Gettys than the eye could count.

HBO Show of Choice:
New York: True Detective (Cary Fukunaga)
San Francisco: Game of Thrones (Emilia Clark)

Guest Who Spent Longest Tanning
New York: Actor Evangelo Bousis
San Francisco: Designer Domenico Dolce

Who Is That, Again?
New York: Oh, that's Ayakamay, the performance artist.
San Francisco: Him? That's Justin Fichelson, of Million Dollar Listing.

Location, Location, Location
New York: Frank Lloyd Wright's Rotunda
San Francisco: George Applegarth and H. Guillaume's Legion of Honor

Token Model
New York: Lindsey Ellington
San Francisco: Devon Aoki

DJs
New York: Multimedia artist and Flatbush resident Melo-X
San Francisco: Dior ambassador and London resident Nikki Penny

Parting Gifts from Your Sponsor
New York: David Yurman bracelets, creatively used as napkin rings.
San Francisco: Tickets to the Dolce & Gabbana fall show. Well, at least for the winner of one lot at the auction.