You heard it here first! And here's a picture! The back is also crewneck. The dress is by Valentino Couture Spring/Summer 2012 Collection (which has at least 4 tsnius styles). And according to the link, she chose this dress because it has long sleeves! It's apparently chilly for Hollywood tonight, which may be why she made this decision, but I think it's exciting to have a 20-year old actress choose to wear a modest dress for a change!