It’s couture, but it LOOKS like it costs $198 at Free People.

sienna miller cannes sea of trees premiere

But it IS awfully windy at Cannes, so perhaps dressing as a human kite means she has the greatest sense of occasion we’ve seen yet.

[Photo: Getty]

Tags: Cannes, Cannes 2015, Sienna Miller
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Met Gala 2015: Fug Nation’s Official Best and Worst
Met Gala 2015: Fug Nation’s Official Best and Worst
Cannes Mostly Well Played: Naomi Watts (and Matthewly Played, McConaughey)
Cannes Mostly Well Played: Naomi Watts (and Matthewly Played, McConaughey)