Sienna Miller is going to be a mom again.

The 41-year-old American Woman star is pregnant and expecting her second child, People confirmed.

She revealed the news as she was photographed in a bikini while vacationing in Ibiza.

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She wore a brown two-piece bathing suit that put her baby bump on display in the photos.

Prior to her vacation in Ibiza, she was seen spending time in St. Tropez with her 26-yera-old boyfriend Oli Green.

The actress already has a daughter Marlowe, 10, whom she shares with Tom Sturridge.

Last year, she spoke about the pressure of building a family after turning 40.

“[The] pressure… [about] kids, and should I have more, and why haven’t I, and all of that, which is a really loud noise. Biology is incredibly cruel on women in that decade – that’s the headline, or it certainly was for me,” she told Elle UK.

Congratulations to Sienna Miller! Find out which stars are also expecting babies.