Sienna Miller: Moet & Chandon Etoile Awards!

Sienna Miller attends the Moet & Chandon Etoile Award Ceremony at the Park Lane Hotel on Monday (September 19) in London, England.

The 29-year-old British actress met up with famed fashion photographer Mario Testino, who was honored at the event for his contribution to cultural society.

Also pictured at the black tie event: model and newlywed Kate Moss.

Earlier in the day, Sienna sat front row at the Burberry Prorsum show.

She also attended Matthew Williamson‘s presentation during London Fashion Week.

10+ pictures inside of Sienna Miller, Kate Moss, and Mario Testino at the Moet & Chandon Awards…