Getting a great start to the London Film Festival, Sienna Miller attended the BFI Luminous Gala in the U.K. on Tuesday (October 8).

The "Layer Cake" star looked fresh on the red carpet in a bright white sleeveless dress with black heels as she posed for pics.

Soon, fans can catch the 31-year-old actress in the upcoming film, "Two Jacks," which follows legendary Hollywood director Jack Hussar and his son Jack Jr.

Based on Tolstoy's short story, "The Two Hussars," and directed by Bernard Rose, the movie hits theaters on October 18th.