Sienna Miller and Oli Green Debut as Parents!

New parents and Oli Green joined fellow couple and  at Jack Ryan: Ghost War premiere in New York on Friday. 

The British actress, 44, and hunky model, 29, welcomed their second child just three weeks ago, they are already parents to a two-year-old daughter.  While Sienna is also mum to daughter Marlowe, 13, whom she shares with ex-fiancé . 

Sienna, who plays Emma Marlow in the action movie, looked effortlessly stylish in a strapless oversized grey gown. 

She forwent a necklace, opting instead for statement earrings while Oli coordinated perfectly in a grey suit.

Meanwhile Emily, 43, was on hand to support husband John, 46, who leads the cast as Jack Ryan in the spin-off after playing the role for four seasons on TV.

The actress, who shares daughters Hazel, 14, and nine-year-old Violet with The Office star, caught the eye in an ostrich feathered mini dress.

Meanwhile John cut a more relaxed figure layering a green sports jacket over a white vest and black trousers. 

It comes after took to Instagram with candid footage of her breastfeeding her newborn baby backstage at The Tonight Show With n on Friday.

In the clip Sienna could be seen feeding the baby while she sat in the make-up chair before passing the little one to Oli who cooed over the newborn, whose gender or name the couple have not made public.

The new mum was later surprised with a Tonight Show baby grow, before she slipped into a figure-hugging yellow dress and headed onto the set.

Asked by the host which of her children are tougher to look after, she said: 'I would have said the teenage girl would be harder to juggle until the transatlantic flight I took yesterday with the toddler and the newborn. The toddler now wins hands down. It was an absolute disaster. There's no negotiating,'

She added: 'I got to the immigration line and just broke down.'

Sienna announced that she had welcomed her second child with Oli, telling E! News last week : 'It's happened. I have a tiny baby next door. 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.'

She is currently blazing the promo trail with her latest movie, Jack Ryan: Ghost War, and announced the sweet news to the publication in her promotional interview.  

Sienna announced her third pregnancy by revealing her blossoming bump at the star-studded  in December. 

It was only right for the actress to make her revelation with a statement look on the blue carpet outside the Royal Albert Hall in London. 

And it is not the first time Sienna has used the red carpet at a fashion event to announce she is . 

Back in September 2023, Sienna  

The actress walked the red carpet at London's Theatre Royal Drury Lane in a Schiaparelli puffball skirt and a cropped shirt which showcased her baby bump.

Previously speaking about Oli, Sienna told Harper's Bazaar: 'I didn't expect to take it seriously and then quite quickly, I fell in love. 

'I wasn't like, "I'm gonna get a younger boyfriend." It was more, "F***! Why are you young? That's so annoying."  

'There is a difference in the way that generation of men respect women. 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.'