Blake Lively @ Seventh on Sale

Gossip Girl sweetie Blake Lively is heavenly in a mellow yellow Michael Kors gown at the Seventh on Sale dinner gala at NYC’s 69th Regiment Armory on Thursday.

Seventh on Sale is basically the world’s largest sample sale. Scores of fashion brands have donated thousands of items to be sold through December 7 on 7thonsale.ebay.com. 100% of the money raised goes to services and housing for those living with HIV and AIDS.

Because of the Thanksgiving holiday, the next all-new episode (“Blair Waldorf Must Pie!”) of Gossip Girl airs on Wednesday, Nov. 28 @ 9PM ET/PT on The CW.

10+ pictures inside of Blake Lively @ Seventh on Sale…