Sienna Miller is having a baby girl! Pregnant star, 41, displays her bare bump on Vogue cover as she admits to having her own prejudices about being an ‘older mother’

Sienna Miller has revealed she is expecting a baby girl with partner, Oli Green.

The actress, 41, announced the news in a British Vogue interview in which she shows off her bare stomach on the cover and on an inside spread alongside her daughter Marlowe, 10, and Oli.

During the rare interview, Sienna said her firstborn, from her relationship with actor Tom Sturridge, 38, has been looking for a sibling for some time.

But now that the baby is on the way, Sienna has said she has battled her own prejudices about being an older mother and has had to learn to stop making fun of it.

She told the publication, “I'd like to get to a point where I didn't feel the need to make a joke about me being older and having a baby, to show that I'm in on the joke.”

Of that divisive Schiaparelli ensemble she wore to Vogue World in London in September, Sienna said: “I was nervous about the idea of ​​it, but once I put it on, everything else felt boring.

'I thought: I will have that photo for the rest of my baby's life. It's quite fascinating to fight your own prejudices against yourself. I do that all the time.'

During the interview, Sienna described the difference in her mindset surrounding her birth plans between her first and second babies.

She admitted that she had her heart set on a “natural” birth with Marlowe, with her sister Savannah, 44, (who had had multiple home births) as her doula.

But instead she was induced at the hospital and endured 27 hours of grueling labor.

She added: 'It was like a terrible trick of the universe. I thought: this can't be what my sister felt like at home in her birthing pool.'

Sienna had an emergency C-section, which she called a destabilizing experience. She said: 'It was so essential in my mind that I got it 'right'. And so emblematic of the kind of mother I would be, that I wasn't.

“But in retrospect, I know these were just the demons of new motherhood. This time she says, “I don't think I'm going to put that pressure on myself.”

Sienna said she still wants to try a natural birth, and she recently switched to a doctor who shares that view.

The actress, who was previously in a long-term relationship with 50-year-old Jude Law, confirmed she was expecting her second child during a beach holiday in August.

Read the full interview in the upcoming issue of British Vogue.

Of that divisive Schiaparelli ensemble she wore to Vogue World in London in September, she said: 'I was nervous about it, but once I put it on, everything else felt boring'

Lovers: Sienna confirmed she is expecting her second child with partner Oli Green, 26, during a beach holiday in August (pictured at Wimbledon in July)