Sienna Miller and Marlowe at premiere

Sienna Miller, 44, attended the London premiere of her new series War with her daughter Marlowe, 14.

Sienna's family background

Sienna shares her eldest daughter with ex-boyfriend Tom Sturridge, who she dated for four years until 2015.

Sienna's current family

Sienna welcomed two children with fiancé Oli Green and a third child in April.

Sienna's fashion at premiere

Sienna wore a strapless feathered 'Dark Phoenix dress' by Dilara Fındıkoğlu.

Sienna's motherhood struggles

Sienna said she feels like 'a lactating heifer' and struggles to dress her 'massive boobs'.

“i feel like a kind of lactating heifer”

Sienna's sleep deprivation

Sienna bemoaned being 'pregnant or breastfeeding for nearly four years'.

Sienna's fashion advice

Sienna often turns to model Alexa Chung for fashion advice.

Sienna's recent interviews

Sienna spoke about motherhood in interviews with Vogue and Jimmy Fallon.

Sienna's role in War

Sienna plays international film star Carla Duval in the eight-part drama.

Dominic West's role

Dominic West plays wealthy British tech entrepreneur Morgan Henderson.

War's plot

War follows a couple going through a bitter divorce and a major legal battle.

War's production

War is created by George Kay and will start on October 2 on Sky and NOW.

War's second season

War's second season will move to a new legal case involving defamation.

Sienna's motherhood challenges

Sienna said she 'doesn't know who she is' due to sleep deprivation and motherhood.

Sienna's recent pregnancy

Sienna welcomed her third child in April with fiancé Oli Green.

Sienna's fashion struggles

Sienna said she has lost her fashion sense after being pregnant or breastfeeding for nearly four years.