Sienna Miller & Boyfriend Lucas Zwirner Attend 'American Woman' Premiere in London

Sienna Miller and Lucas Zwirner are heading out together!

The 37-year-old actress and the 28-year-old writer were seen leaving the American Woman film premiere on Wednesday (October 9) in London, United Kingdom.

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In the movie, a woman raises her young grandson after her daughter goes missing.

Sienna and Lucas looked in good spirits, holding hands while heading to their ride after the film’s premiere.

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