Sienna Miller and Oli Green are taking a major step in their romance.

On the heels of welcoming their second baby together, the American Sniper actress and The Crown actor are now officially engaged.

Miller sparked engagement rumors when she stepped out in Spain sporting a massive diamond ring on that finger June 4. And E! News can confirm that it is, in fact, an engagement ring.

During the outing, Green appeared to put her ring on full display, sporting sunglasses, jeans and a jacket draped around her shoulders. The 44-year-old—mom to Marlowe, 13, with ex Tom Sturridge, as well as two younger children with Green—walked with her hands placed delicately in front of her, keeping her ring a focal point of her look. 

And while Miller and Green—who started dating in 2022—are taking a major step with their engagement, this year has already been major for them as they confirmed the arrival of their second baby last month. 

 “It’s happened,” Miller quipped to E! News at the time. “I have a tiny baby next door.”

The Jack Ryan actress mused of welcoming their family’s new addition, “I’m on very little sleep but I’m madly in love with my baby.”

As for how she’s juggling life as a newfound mom of three? Miller recently shared insight into which of her kids has been the hardest to parent as of late. 

“I would have said the teenage girl would be harder to juggle until the transatlantic flight I took yesterday with the toddler and the newborn,” she joked during an appearance on The Tonight Show May 14. "The toddler now wins hands down. It was an absolute disaster. There’s no negotiating.”

Indeed, Miller admitted that flying with her kids was a particular struggle. 

“The looks people give you on the flight,” she recalled. “The baby’s screaming, she’s screaming. It was like, 'Yeah.' I got to the immigration line and just broke down.”

Of course, Green is always there to pick her back up. In fact, Miller has shared how her relationship with the 27-year-old changed her mind on dating someone younger. 

"There is a difference in the way that generation of men respect women,” she told Harper’s Bazaar in 2024. “It’s specific to him, he is very wise and well-adjusted, but I do believe it’s also that generation. They have grown up with a slightly more level playing field.”

For more stars who have gotten engaged this year, keep reading
 

More than two years after his televised engagement on the season 28 finale of The Bachelor, Joey once again popped the question to Kelsey—this time during a romantic trip in Cabo San Lucas, Mexico.

"SHE SAID YES (again)," he wrote on Instagram May 26. "Proposing again meant taking something that was already extraordinary and making it fully our own. It means the world to be able to reaffirm our promise and love to one another just the two of us."

The English actress and musician announced their engagement in April 2026, with a sweet glimpse at Josh's Disneyland proposal. 

"MY BEST FRIEND SAID YES!!!" Josh wrote in an Instagram post. "Sharing this life with you is my happiest place."

After one year of dating and nearly a decade of friendship, the daughter of Kansas City Chiefs owner Clark Hunt shared she was engaged to the son of NFL legend Trent Green in an April 4 Instagram post, writing, "It was always you."

A fiancée has entered the villa. The Love Island USA alum got engaged to her longtime partner after he proposed in Paris, she announced on March 19. 

Nearly two years after the Married at First Sight couple's cheating scandal air on the dating show, they got engaged in Chicago during St. Patrick's Day festivities.

The NFL star of the Tampa Bay Buccaneers proposed to his longtime love Jaime Jones in a beautiful and intimate moment at Davis Islands Beach in Tampa, Florida. Surrounded by rose petals and large “MARRY ME” letters, the proposal was thoughtfully planned and an unforgettable moment. 

The custom designed Brilliant Earth engagement ring features a 4.04-carat radiant diamond set in platinum, with marquise diamonds that wrap elegantly above and beneath the center stone.

The tech exec surprised the dancer at her 38th birthday party.

"It was the most romantic night of my life!" she wrote on Instagram. "I am so in love with you Adam. Baby, I am forever grateful for you and the impact you have had in my life and my kids lives. I am a better person because of you. You helped me find me again and showed me how to love. Every morning I wake up I feel safe knowing you are My person at my side. You and your kids coming into our lives has been the biggest blessing."

The entrepreneur proposed to the tennis star in romantic, rose-laden proposal in March.

Aryna captioned the joint announcement, “You & me, forever. 3.3.26.” 

The Hunger Games actress announced her engagement to the fellow actor, who she described as “a dream come true.”

“My soulmate asked me to marry him,” she wrote on Instagram Feb. 11. “With every lifetime, every moment I have in front of me I said yes.”

The Oscar winner revealed she recently got engaged to her longtime boyfriend during a February appearance on The Tonight Show.

“There’s some confusion,” she said. “It's going around that I, that my guy Van Hunt—I've been dating him now for almost six years—well, there's some confusion that he asked to marry me and I said no.”

However, “I did not say no,” Halle affirmed. “We just don't have a date, but of course I said yes, I would marry him!”

The Liv and Maddie alum revealed her ring on Jan. 3, captioning their news, "my favourite part of being alive [ring emoji] happy new year."

The Real Housewives of Orange County star got engaged to her fiancé during a New Year's Eve trip to Big Bear, Calif.

"I was in complete shock!" she told People in a Jan. 7 interview. "My nervous system was trying to catch up to what just happened in this magical moment and I was also trying to process the iceberg that was being presented to me as well! I of course said 'yes,' and melted into what was the sweetest kiss I’ve ever felt!"