Tilda Swinton found in sleeping mode at Museum of Modern Art’s glass box

Actress Tilda Swinton has set up a new address in a glass box at the Museum of Modern Art as she has taken part in an unannounced performance piece. Clad in jeans and a blue button-down shirt, the 52-year-old Academy Award winner slept on an unadorned white pallet in a transparent display case in front of museum visitors, according to reports. A label enlisted the act as "living artist, glass, steel, mattress, pillow, linen, water, and spectacles."

In 1995, she debuted with the performance art piece titledThe Maybeat London`s Serpentine Gallery. Later she repeated the work in the Museo Barraco in Rome. But this time the date of her exclusive exhibition remained unknown even to the MoMA employees. A source said, "Museum staff doesn`t know she`s coming until the day of. All that`s in the box is cushions and a water jug.”

The MoMA clarified,"An integral part of The Maybe's incarnation at MoMA in 2013 is that there is no published schedule for its appearance, no artist's statement released, no museum statement beyond this brief context, no public profile or image issued. Those who find it chance upon it for themselves, live and in real-shared-time: now we see it, now we don't."