Actress Sienna Miller was seen at the 68th Annual Cannes Film Festival in Cannes, France on May 16, 2015. The actress attended the premiere of Sea of Trees, the new Gus Van Sant film, which unfortunately got terrible reviews at the festival. Miller wore a color blocked gown, that had a diamond pattern on top, which to me resembled a kite. Still, she looked stunning. The film, which also stars Matthew McConaughey, was met with a chorus of boos following the screening.