Ksenia Bradner in Isabel Marant Spring 2011

Ksenia Bradner, Tom Hardy, Ray Stevenson, Juliette Lewis and Jennifer Lawrence attended the ‘Thunder & Lightning’ New York photocall at the Crosby Street Hotel in New York City on Saturday afternoon.

Ksenia chose a Isabel Marant Spring 2011 "Lido" purple printed silk georgette strapless dress, which has to be the cutest Isabel Marant creation I have ever seen.

Opting out of the runway's leather belt, she wore a Haider Ackerman "Watts" thin blue belt instead, which works better.

Ksenia matched her belt with blue Miu Miu mary jane peep toes with a glitter heel.

Cute and event appropriate.