Sienna Miller: Esquire House LA Host!

Sienna Miller keeps it classy in a Nina Ricci LBD at the grand opening of Esquire House LA in Los Angeles on Friday (October 15).

The 28-year-old actress hosted the event and flew in from England, where she was spotted the day before at Heathrow Airport in London.

On the red carpet, Sienna greeted and hugged her G.I. Joe: The Rise of Cobra co-star Marlon Wayans.

Also attending the bash, which benefited International Medical Corps: Kate Bosworth, Aaron Eckhart, and True Blood‘s Mehcad Brooks.

FYI: Sienna finished off her look with Stella McCartney shoes.