Sienna Miller was in London last night to support the First Light Movie Awards, which honors up-and-coming young filmmakers. She shook hands with nominees and stopped to strike a few poses in her dress and twenty8twelve jacket. One of her own independent films, The Mysteries of Pittsburgh, just released a new trailer — but it's her big blockbuster GI Joe that actually has a release date. It hits screens this August 7, when we'll see what to make of all the early negative buzz.
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