Jessica Chastain, Leonardo DiCaprio: A day in Hollywood

Here's a lowdown on what your favourite Hollywood stars have been up to.

US actress Jessica Chastain arrives for the British premiere of the film Salome and Wilde Salome at Southbank in central London on September 21.

Wilde Salomé is a 2011 American documentary-drama film written, directed by and starring Al Pacino, along side Chastain. 

Actor Leonardo DiCaprio speaks after accepting his Clinton Global Citizens award for philanthropy during the Clinton Global Initiative 2014 (CGI) in New York September on 21.

The CGI was created by former US President Bill Clinton in 2005 to gather global leaders to discuss solutions to the world's problems.

Actress Uma Thurman poses before the Clinton Global Citizens awards ceremony. 

Presenter and actress Eva Longoria holds an award during the Clinton Global Citizens awards ceremony.

Cast members Ben Kingsley and Elle Fanning pose with Boxtroll characters at the premiere of The Boxtrolls at Universal Studios City Walk in Universal City, California on September 21.

The movie opens in the US on September 26. 

Actress Emma Thompson speaks during the 'People's Climate March' in central London on September 21.

The London march was one many held worldwide, ahead of the forthcoming UN Emergency summit on climate change. 

Spanish actor Antonio Banderas embraces a robot used in the film Automata during a photocall on the third day of the 62nd San Sebastian Film Festival on September 21.  

Banderas stars in and produced the science fiction film, which is part of the festival's official section.