Tilda Swinton has reprised one of her more unusual roles – sleeping in a glass box.
The Beach actress, who is known for both arthouse and mainstream films, is performing her one-person piece at the Museum of Modern Art in New York.
The Moonrise Kingdom star began presenting her work, which is called The Maybe, on Saturday.
In The Maybe, 52-year-old Swinton lies sleeping in a glass box for the day.
The exhibit will change locations within the museum every time Swinton performs.
There is no published schedule for the piece, which will be staged six or so more times this year.
Swinton first performed the piece at the Serpentine Gallery in London in 1995.
In 1996, the British star performed it in the Museo Barracco in Rome.
Swinton won an Oscar in 2008 for best supporting actress for her role in legal drama Michael Clayton, which also starred George Clooney, Tom Wilkinson and Sydney Pollack.
Her other films include Burn After Reading, The Beach and The Chronicles Of Narnia.
She was nominated for a Golden Globe for her performances in The Deep End and We Need To Talk About Kevin.
The actress was recently seen alongside David Bowie in the video for his single The Stars (Are Out Tonight).