03/10/2013 07:35 BST

Kristen Stewart Strips Down To Underwear On The Set Of 'Sils Maria' (VIDEO)

Kristen Stewart has stripped down to her underwear on the set of her latest film, 'Sils Maria'.

The 'Twilight' actress was spotted with her French co-star Juliette Binoche shooting a scene set in the Swiss mountains where they splashed around in a lake.

In 'Sils Maria', Stewart plays an assistant to Binoche's character, an ageing actress Maria Sanders who becomes fascinated with a younger thespian played by Chloe Moretz.

WATCH the video above for more.