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Updated Jun 24, 2026Sienna Miller and Boyfriend Lucas Zwirner Are Engaged
The 'American Sniper' actress is getting married.
(Photo by John Rainford/GC Images)
Updated Feb 03, 2020
Sienna Miller and boyfriend Lucas Zwirner are engaged after months of speculation. Us Weekly confirmed Monday, February 3, that the American Sniper actress is marrying Zwirner after a year of dating. "They're so in love," a source told the mag. "Her daughter [Marlowe] has a nice and close relationship with Lucas too. They're excited for this new chapter."
The confirmation that Sienna Miller's boyfriend is now her fiancé was made hours after the GI Joe actress, 38, stepped out this weekend at the Writers Guild Awards wearing what appeared to be a beautiful engagement ring on that finger.
(Photo by Dominik Bindl/WireImage)
(Photo by Dominik Bindl/WireImage)
Miller and Zwirner, 28, were first publicly linked in December 2018, after both attended the birthday party of Miller's former fiancé Tom Sturridge. The amicable exes share their 7-year-old daughter Marlowe. This is the British beauty's third engagement following her relationships with Sturridge and Jude Law.
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