Diane Kruger was the epitome of ladylike chic on the green carpet in a black, long-sleeved Jason Wu dress as she attended the Green Auction: A Bid to Save the Earth at Christie's in New York on March 29.

We love that the star, who never seems to put a foot wrong on the red carpet, went for a twist on the standard LBD. Kruger's "Mad Men"-silhouette dress, from Wu's Fall 2011 collection, had a white peekaboo hemline which added a pop of contrast to the all-black look. The star added a pair of blush satin heels, a white clutch bag and long, gold earrings as the finishing touches to her outfit.

Beauty-wise, Kruger also impressed with her messy side braid and natural glow.

Also in attendance at the event were designers Wu, Michael Kors and Rachel Roy, as well as Vogue's Anna Wintour.

For more Diane, check out her sexy, still-in-bed photo shoot for GQ.