Gwen’s gorgeous and much talked about L.A.M.B. dress that she walked the red carpet for the annual amfAR Gala in Cannes earlier this year has been featured in Glamour magazine’s countdown of the 40 Best Dresses of 2011! The dress was auctioned off during the event and went on to raise over $125,000 that benefited AIDS research and the amfAR foundation.