For those of you who aren't up to date on your exclusive French luxury brands, Longchamp does mostly accessories and handbags and has long been a celebrity staple. So we weren't surprised to see that they had a great turn out for their anniversary party!

The theme of the night was LBD. Ok, so maybe that wasn't an official theme, but it really did seem like all the actresses called each other up and had one of those 7th grade conversations with each other -- "Like, oh my god, we should all totally wear our little black dresses tonight!"


Browse through the gallery to hear what we have to say about the fashion that went down at the event. We'll give you a hint -- Diane Kruger went for an interesting look, to say the least. And Coco Rocha was all about the 80's prom style, while Olivia Palermo went a little overboard on trends.