Pregnant Sienna Miller Celebrates Baby on the Way with Pink-Centric Baby Shower — See Photos!

In August, PEOPLE confirmed that the actress, 41, is pregnant with her second child

Sienna Miller is getting ready for her baby on the way.

In August, PEOPLE confirmed that the actress, 41, is pregnant and expecting her second baby after she was photographed in a bikini with a growing bump while on vacation in Ibiza.

On Sunday, Miller was surrounded by friends, family and loved ones as she celebrated her baby shower and prepared for her baby-to-be, who will join her daughter Marlowe, 11, whom she shares with ex Tom Sturridge.

The actress’ sister, fashion designer Savannah Miller, shared photos from the shower on Instagram, writing, “Last night we showered @siennathing in love in preparation for the most exciting arrival. It was pure magic.”

She added, “I can’t wait to meet the newest member of our family 💕🌸🩷🌸💕🌸🩷🌸💕.”

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Related: Sienna Miller Shows Off Baby Bump in Fall Fashion Campaign

The designer shared photos of the actress opening some of her gifts, as well as shots of some of the shower’s other guests, including Miller’s boyfriend, actor Oli Green, 26, and his brother, Sam Green, as well as the sisters’ mother, actress Josephine Miller.

The shower featured a gorgeous array of pink decor, including some impressive balloon displays, a flower crown for Miller, and several pink-centric bouquets. There was also a nail art station for guests.

The overflowing presence of pink at the party has many fans guessing that Miller is expecting her second daughter, but the actress has not yet commented on the sex of her baby.

Miller’s close friend and publicist Tori Cook also shared some photos from the day, including a shot of a beautiful table spread, a cake for Miller, and a photo of the expecting mother smiling with an array of balloons with her hands cradling her baby bump.

“A very special baby shower 👶🏼 for a very special person with lots of special people 💗💗💗💗💗💗💗💗💗💗💗💗💗,” Cook captioned the post.

Since her baby bump was first spotted in August, the Anatomy of a Scandal actress has had several high-fashion moments with her bump on display, including the Vogue World Show during London Fashion Week in September.

She wore an epic cropped white, long-sleeve top that stopped just before her bump, baring her belly, and matched it with a voluminous white skirt. She posed on the red carpet at the event — which kicked off London Fashion Week — with her hand on her hip, accentuating her growing bump.

Miller has been outspoken about her love of being a mom over the years. When Marlowe was 3, she reflected on how her daughter had changed her life, telling Marie Claire that motherhood was “the most profoundly, deeply affecting thing.”

“I didn’t feel I had proper roots till I had her; I was whimsical and spontaneous."

She added, “I feel anchored in the way I was looking for, and our life is beautiful and simple. We go to the park; I take her to school; we go to the country and she gets muddy and rides ponies. You try to re-create the magic you remember.”

In 2019, she told PEOPLE that Marlowe “challenges” her and “is a real mirror.”

"When you are raising a child you see aspects of your character in that person, reflected back, and it's the most loving, intense relationship that I have," she said. "There's nowhere to hide."

The actress continued, "She knows me, I know her. She's really stubborn, which is very like me. I see her as her own person but I also see genetic things. She's heaven, my kid."

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