Rachel Bilson was on the go today after commencing her duties as Sunglasses Hut's Style Director last night at a party celebrating their new NYC store. Joining Rachel at the bash were other fashion-conscious starlets like Nikki Reed and Zoe Kravitz, who both headed off afterward to make the party rounds with stops at the Tribeca Film Festival and a Chanel dinner. Zoe will be a little fancier next week when she attends the Costume Institute Gala in a custom Alexander Wang for Gap creation — check out who else is going and what they'll be wearing. Rachel's a natural to give advice on accessorizing since she looks great both on the red carpet or off, and Fab also has a few suggestions on Spring sunglasses you need now!

To see more photos of Rachel at the event just