Lucas Zwirner | Entertainment News, Photos, and Videos

Sienna Miller and her boyfriend Lucas Zwirner have reportedly called it quits after one year of dating.

The 38-year-old actress and the 29-year-old art gallery exec were rumored to be engaged, though nothing was ever confirmed.

PHOTOS: Check out the latest pics of Sienna Miller

Page Six reports that Sienna was the one to break things off with Lucas, but they don’t know what happened between them.

Sienna and Lucas were first spotted together in early 2019 and they were seen together many times, including a fun beach vacation in France last summer. The engagement rumors started swirling earlier this year when she was spotted wearing a ring on that finger and she was seen wearing the ring as recently as July.

Sienna has previously been engaged to Jude Law and Tom Sturridge, with whom she shares a daughter.

Fans seem to think Sienna Miller is engaged to Lucas Zwirner based on a huge rock on that finger!

The 38-year-old actress was seen out and about with what appears to be an engagement ring on her finger on Sunday (February 2) in New York City.

If you don’t know, Lucas is the 29-year-old editorial director of publishing house David Zwirner Books.

PHOTOS: Check out the latest pics of Sienna Miller

So far, Sienna has not made an official comment confirming the rumors.

The first photos we have of Sienna and Lucas together are from back in March of 2019, when they were first linked.

The stars have started to arrive at Jennifer Lawrence and Cooke Maroney‘s wedding!

Emma Stone looked so glam in a silver, velvet outfit as she and boyfriend Dave McCary arrived at the Belcourt of Newport estate on Saturday evening (October 19) in Newport, Rhode Island.

PHOTOS: Check out the latest pics of Emma Stone

Other stars stepping out for the 29-year-old Oscar winner’s big day included Kris Jenner and boyfriend Corey Gamble, Sienna Miller and boyfriend Lucas Zwirner, fashion editor Derek Blasberg and boyfriend Nick Brown, Ashley Olsen and boyfriend Louis Eisner, and David O. Russell, who directed Jen in Silver Linings Playbook and American Hustle.

The night before, Kris was spotted joining Adele, Cameron Diaz, and Nicole Richie at Jen and Cooke‘s rehearsal dinner, which was a laid back clam bake on the beach.

You can get more details on Jennifer Lawrence and Cooke Maroney‘s wedding here!

FYI: Sienna is wearing a Johanna Ortiz dress.

25+ pictures inside of the stars arriving at the wedding…More Here! »

Sienna Miller and boyfriend Lucas Zwirner are enjoying a day out together!

The 37-year-old actress and the 28-year-old writer held hands as they crossed the street during an afternoon walk on Friday (October 18) in New York City.

PHOTOS: Check out the latest pics of Sienna Miller

Sienna looked cute in a tan, teddy jacket and Gucci crossbody bag while Lucas sported a tan jacket and matching trousers for their afternoon outing.

Earlier this month, Sienna and Lucas coupled up for the premiere American Woman in London.

READ MORE: Sienna Miller Stars in New Gucci Cruise Campaign With Gucci Mane & Iggy Pop

FYI: Sienna is wearing a Mandkhai sweater.

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.

PHOTOS: Check out the latest pics of Sienna Miller

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.

READ MORE: Sienna Miller Stars in New Gucci Cruise Campaign With Gucci Mane & Iggy Pop

Ellie Goulding and her new husband Caspar Jopling had a lot of celebs show up to their wedding, which took place on Saturday (August 31) at the York Minster Cathedral in York, England.

The couple was introduced by Princess Eugenie and she was there with her husband Jack Brooksbank, sister Princess Beatrice and her boyfriend Edoardo Mapelli Mozzi, and their mom Sarah Ferguson.

Katy Perry and Orlando Bloom were spotted holding hands while entering the church and another couple in attendance were Sienna Miller and her boyfriend Lucas Zwirner.

Something that Caspar and Lucas have in common is that they are both art dealers!

Also spotted at the wedding were singer James Blunt and his wife Sofia Wellesley.

FYI: Ellie is wearing a Chloé wedding dress.

20+ pictures inside of Ellie Goulding and her guests arriving for the wedding… More Here! »

Sienna Miller and Lucas Zwirner are looking all loved up!

The 37-year-old The Loudest Voice actress and her 28-year-old boyfriend were seen cuddling and kissing on Wednesday (August 14) in Formentera, Spain.

PHOTOS: Check out the latest pics of Sienna Miller

Sienna was spotted enjoying her time on her vacation, playing frisbee with her friends wearing a black bikini. She and Lucas were also seen taking a dip in the water and kissing while sitting down to eat and drink.

She currently appears on The Loudest Voice, a seven-part limited drama series about Roger Ailes, the founder of Fox News. Click here to see how she prepared for her role!