What a beaut!
The starlet was sophisticated in her off-the-shoulder Balenciaga frock with its colorblocked prints, which she simply styled with black strappy sandals.
She looks like a Barbie doll! Or at least the kind that goes to chic French film festivals!
Plus, Sienna's blown out blonde bob and red pout added the right amount of glamour to her fitted look!
Do U love or what???
[Image via Ramey Pix.]