Gwyneth Paltrow was admitted to New York's Mount Sinai Hospital yesterday afternoon, Usmagazine.com has learned.

"She was slumped over in a wheelchair pushed by [husband] Chris Martin," an eyewitness tells Us. "She looked not well."

At 6:30 p.m., a bag — labeled "Gwyneth Martin" — from NYC organic home supply store Organics Avenue was delivered.

A source tells Us she and Martin were spending the night.

The reason for the hospitalization is unknown

Her rep tells Us, "we are not commenting as it's a personal matter."

source: usmagazine.com