Sienna Miller is putting her baby bump on display!

The 41-year-old actress, who is pregnant and expecting a child with boyfriend Oli Green, wore a two-piece outfit while walking the red carpet for the Vogue World event on Thursday (September 14) in London, England.

The fashion show kicked off London Fashion Week and was attended by dozens of A-List celebs.

News of Sienna‘s pregnancy was confirmed last month after she was spotted in a bikini while vacationing in Ibiza, Spain. 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.

FYI: Sienna is wearing a Schiaparelli Couture look.