Sienna Miller Is Set to Walk Down The Avenue With Art Gallery Owner Lucas Zwirner

Sienna Miller and art gallery owner Lucas Zwirner have reportedly been dating for an extended period, with her recently seen flaunting a sparkler as she ran errands in New York City. Wearing an understated ensemble featuring white motif tee, high-waisted jeans, khaki sports jacket and red bag complete the daytime outing look – she completed it by adding cozy brown boots – she could soon make headlines as an engaged woman!

Denis Stepansky of Denis Stepansky Jewelers estimates the ring to weigh 4 carats and be worth between $100,000 to $150,000.

Sienna Miller has now become engaged three times. In 2004, she became engaged to actor Jude Law but the relationship ultimately came to an end after Law was accused of cheating with their children’s nanny. Sienna then went on to date actor Tom Sturridge; during their relationship, the pair gave birth to Marlowe in 2012. These former lovers remain amicable exes who share custody. Additionally, Miller and Ifans have both been linked with Sienna.

Since 2013, Sienna has been busy expanding both her acting career and fashion line. She has featured in films like Layer Cake, Stardust, American Sniper and Alfie as well as performing plays like As You Like It and GI Joe on West End stages.

She has graced red carpets around the country looking absolutely breathtaking, most recently at the Writers Guild Awards where she looked stunning in a buttermilk yellow Rebecca Vallance midi dress that can currently be purchased through The Outnet. It perfectly captures this season’s most beloved hue while remaining sensuous thanks to its ruched sleeves and cutout waist detail; pairing this beauty with gold Gucci Marmont sandals completed her look!

As for her current beau, Zwirner is the scion of an art gallery empire and oversees his father’s publishing house established as part of David Zwirner Gallery. A Yale literature expert known for his expertise on contemporary artists, he plans to expand the company beyond publishing books alone.

Sienna has kept their relationship under the radar, though rumors began swirling about last month when they were seen holding hands outside a gallery installation. On Wednesday, Sienna further fuelled speculation by sporting an eye-catching diamond ring on her left hand while out and about in Manhattan.