Marion Cotillard attended the premiere of her new movie, Inception, along with co-star, Leonardo-Dicaprio in a disastrous dress by Thakoon Pre-Fall 2010 collection. Well, I wonder what was Marion thinking when she chose to wear this outfit and that too alongside the smashing, Leo! Well, the dress is not bad if you want to wear it on day out with friends but to a red-carpet event, it was a real shock! The whole look was just not in. Scroll down for the pictures.