Chapter one of 'Horizon: An American Saga' hits theaters on June 28.
Sienna Miller and Jude Law were in a relationship from 2003 to 2005.
The stylish mother-daughter duo dressed up for the premiere of Sienna Miller’s new film, 'Horizon: An American Saga.'
Here's a look at all the actors picked to portray people at the center of real-life events!
Kevin Costner, Sienna Miller and Sam Worthington star in 'Horizon: An American Saga - Chapter 1,' which hits theaters on June 28.
The 41-year-old British-American actress is pregnant with her second child and first with her boyfriend, 27-year-old actor Oli Green.
The British-American actress, 41, is pregnant with her second child and first with her boyfriend, 26-year-old actor Oli Green.
The actress showed off her bump while vacationing in Ibiza this week.
The anthology drama also stars Sienna Miller, Daveed Diggs, Edward Norton, Diane Lane, Matthew Rhys, David Schwimmer and Keri Russell.
'It's funny that the body remembers these kind of traumatic events,' Miller told ET.
‘Anatomy of a Scandal’ is streaming now on Netflix.
Sienna Miller and Rupert Friend chat with ET about their new drama series, 'Anatomy of a Scandal,' premiering April 15 on Netflix.
A slew of A-listers got the Oscars festivities started early.
ET caught up with Sienna Miller ahead of her latest film, ‘Wander Darkly,’ in select theaters and VOD Dec. 11.