Dianna Agron Steps Out for Vanity Fair & Montblanc Party (PHOTOS)

Dianna's Pink 'Do!
Dianna Agron dyes her hair for 'Glee.'
Vanity Fair’s Campaign Hollywood week continues and Dianna Agron looked gorgeous in blue Tuesday night stepping out for VF and Montblanc’s cocktail party at Hotel Bel-Air.

Agron sported a cap-sleeved blue lace dress to the bash and YSL heels looking very old Hollywood chic.

Amber Heard, Jackie and Joan Collins were a few other guests in attendance.

The party was to launch the new Montblanc “Collection Princesse Grace de Monaco” jewelry collection, in tribute of the late actress, Princess Grace Kelly. The event supported the Princess Grace Foundation-U.S.A.