Sienna Miller is supported by her daughter Marlowe, 14, as she proudly watches during her red carpet appearance at her War premiere

Sienna Miller was joined by her supportive daughter Marlowe at the London premiere of her new series War at the Odeon Luxe in Leicester Square on Wednesday.

The actress, 44, shares her eldest daughter, 14, with her actor ex-boyfriend Tom Sturridge, who she dated for four years until July 2015. She later welcomed two children with her fiancé Oli Green.

Proving she was her mother's biggest fan, Marlowe accompanied the screen star on the red carpet as she attended the screening with her co-stars.

Sienna posed with a protective arm around her offspring, who was wearing a yellow graphic print T-shirt with a black silk midi skirt and ballet flats.

Marlowe could be seen proudly looking on from the sidelines as her mum was interviewed by a reporter during the event. 

Sienna appears in the eight-part drama with Dominic West and they play a couple going through a bitter divorce. 

Sienna Miller was joined by her supportive daughter Marlowe at the London premiere of her new series War at the Odeon Luxe in Leicester Square on Wednesday

Marlowe could be seen proudly looking on from the sidelines as her mum was interviewed by a reporter during the event

Sienna plays international film star Carla Duval, while Dominic takes on the role of wealthy British tech entrepreneur, Morgan Henderson.

Sienna, who welcomed her third child in April, put on a showstopping display in a strapless feathered 'Dark Phoenix dress' by Dilara Fındıkoğlu.

Despite playing a warring estranged couple, there were no signs of strife between the two actors as they put on a friendly display on the red carpet.

Dominic, 56, who looked smart in a navy suit and blue shirt, posed with his arm around Sienna as they shared a laugh in front of the cameras.

The first series will follow their extremely high-profile divorce, which becomes a major legal battle between two rival London law firms.

It has been created by George Kay, whose previous credits include Lupin and Hijack and will start on October 2 on Sky and NOW.

Sky appears to be anticipating success as season two has already been ordered and is being filmed.

The second series will move to a new major legal case involving defamation, meaning War is set to become an anthology series.

Proving she was her mother's biggest fan, Marlowe accompanied the screen star on the red carpet as she attended the screening with her co-stars

Sienna posed with a protective arm around her offspring, who was wearing a yellow graphic print T-shirt with a black silk midi skirt and ballet flats

Sienna appears in the eight-part drama with Dominic West and they play a couple going through a bitter divorce 

The actress, 44, plays international film star Carla Duval, while Dominic takes on the role of wealthy British tech entrepreneur, Morgan Henderson

Sienna recently opened up about the pressures of being a mother again and said she feels like 'a 'lactating heifer' and is struggling to dress her 'massive boobs'.

Sleep-deprived Sienna bemoaned being 'pregnant or breastfeeding for nearly four years', after welcoming two children with her fiance Oli Green, 29.

Sienna welcomed her third child in April and the couple got engaged two months later, and also welcomed a child in January 2024.

In a candid new interview, the mother-of-three joked that she was so tired that she 'doesn't know who she is' any more as she juggles work and raising her brood.

She said: 'I have completely lost my fashion sense. I've been pregnant or breastfeeding for nearly four years, and I think something happens to the brain – or you're so f***ing tired – that you sacrifice your identity. 

'You're just 'mother'... and not in the Gen-Z way, as much as I would like to be.' 

'I'm just really questioning all this, because I'm just so underslept and I kind of don't know who I am. I also have massive boobs, which I don't know how to dress. Anyway, this is far too much information….' 

She also told Vogue that on the day of her interview with them she had been 'up breastfeeding since the crack of dawn', before adding: 'I just feel like a kind of lactating heifer.' 

Sienna also revealed that she often turns to model Alexa Chung – who is her ex Tom's partner – for fashion advice, including what to wear for the recent Oasis: Don't Look Back In Anger premiere.

In May, Sienna appeared on the Jimmy Fallon show in New York just three weeks after giving birth.

Despite playing a warring estranged couple, there was no signs of strife between the two actors as they put on a friendly display on the red carpet

Sienna, who welcomed her third child in April, put on a showstopping display in a strapless black dress that was completely covered in feathers

Honor Swinton, whose mother is actress Tilda Swinton, looked lovely in a lace dress as she attended the premiere after being cast in the series

Emma Laird, who plays Molly Giordano, a training associate at the elite London law firm Taylor & Byrne, opted for an elegant white gown

Rose Williams, who will play Flora Monroe, wore a slinky silver dress

Pictured L-R Nick Mohammed, Pip Torrens, Nina Sosanya, Archie Renaux, Sienna, Dominic, Phoebe Fox, James McArdle and Emma Laird

Dominic and Sienna were spotted chatting to co-star Emma 

Earlier in the evening, Sienna turned heads as she departed her London hotel for the red carpet 

The star put on a busty display in the eye catching feathered black dress 

During her sit-down interview with the TV host she confessed that motherhood was exhausting at times.

Sienna said: '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.

'It's crazy to be talking words and wearing a dress. What has happened from pajama gate.'

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

Sienna also spoke about motherhood in a different interview with Vogue recently. 

She said: 'I'd wanted another baby for so long that my postpartum was just bliss. I had thought, by the time I was 40, that it wouldn't happen. 

'That I'd have my one baby and I kind of made peace with it. It was such a surprise, and it was such a bonus that I was just euphoric. I felt existentially relieved.'

Sienna welcomed her third child in April with fiancé Oli Green, 29. The couple got engaged two months later, and also welcomed a child in January 2024