Blake Lively’s Night of Diamonds

Blake Lively glams up for Chanel’s Nuits de Diamants (Night of Diamonds) at the Plaza Hotel Grand Ballroom in New York City on Wednesday.

The fashion house’s fine jewelry division hosted the private dinner to honor the U.S. debut of 20 one-of-a-kind pieces from the Chanel archives and the Vendôme Collection.

Which other Gossip Girl costar accompanied Blake at the black-and-white affair? None other than rumored flame Penn Badgley (pictured below)!

Their characters are currently enjoying a lot of hot and steamy time on-screen and supposedly are hooking up off-set as well. No pictures have surfaced yet of the “new couple.”

20+ pictures inside of Blake & Penn‘s Night of Diamonds…