Diane Kruger in Giambattista Valli vs Eva Longoria in Marchesa - Cannes 2012 Opening Ceremony

Diane looked like a minty Grecian goddess in a one-shoulder chiffon gown by Giambattista Valli Haute Couture, with glamorous floaty train and Eva carried the most elaborate ruffled train we have seen in a while! She wore Marchesa, from Fall/Winter 2011, and check out the intricate pearl & crystal embellishment. If I had to guess, I would say the train is longer than Eva's own 5'2" frame.

There is no online shopping here, of course, but I will point out a couple of lovely updos. Diane has a gorgeous bun that looks halfway between a topknot and a chignon. Eva channeled a more retro vibe with her hairstyle, I'm a fan of the side part on her. Very glam.

Check out the gowns below.. and just to be different, I'm going to be providing some lovely zoomed in details of dresses at the 2012 Cannes Film Festival. If you have an upcoming special event, and want to get some design ideas, you won't find a better selection of glamour.