Sienna Miller ‘Broke Down’ Traveling Just After Giving Birth

Sienna Miller is getting real about mothering three kids in different phases of life after welcoming a newborn.

“I would say the teenage girl would be harder to juggle until the transatlantic flight I took yesterday with the toddler and the newborn,” Miller, 44, said during a Thursday, May 15 appearance on The Tonight Show Starring Jimmy Fallon. “The toddler now wins, hands down.”

She added, “It was an absolute disaster. There’s no negotiating. No is no.”

Miller recalled the “looks” she was given on the flight while having a child throwing a tantrum.

“The baby’s screaming. She’s screaming,” Miller continued. “I got to the line, the immigration line, and just broke down. I was just like, ‘What do I do?’”

Miller shares eldest daughter, Marlowe, 13, with ex-fiancé Tom Sturridge. She and boyfriend Oli Green have two kids — a daughter born in January 2024 and a second baby born three weeks ago.

“It’s crazy to be talking words and wearing, like, a dress,” Miller said on Thursday. “What has happened from pajama gate?”

Miller confirmed to E! News on Monday, May 11, that she had given birth to her second baby with Green, 29.

“It’s happened,” she confirmed. “I have a tiny baby next door.”

Miller joked, “It feels like stringing sentences together is a bit challenging. I’m on very little sleep, but I’m madly in love with my baby.”

Miller announced her pregnancy in December 2025 when showing off her baby bump at the British Fashion Awards.

Miller has been romantically linked to Green, a fellow actor and producer, since 2022.

“I didn’t expect to take it seriously,” she told Harper’s Bazaar in June 2024. “And then quite quickly, I fell in love.”

The couple made headlines for their 14-year age gap, which Miller addressed in the same interview.

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“I wasn’t like, ‘I’m gonna get a younger boyfriend,’” she recalled. “It was more, ‘F***! Why are you young? That’s so annoying.’”

However, the age gap ended up being a huge plus for Miller, who praised her man for how he treats her.

“There is a difference in the way that generation of men respect women,” she continued. “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. I see it in his female friends as well as in the men.”