The footie legend had stripped off in a communal make-up room when a female worker walked in.
According to The Sun: “He was directed to an area to put some clothes on immediately.
“They thought it was Gazza playing a joke but he seemed genuinely confused and it was an honest mistake. He clearly thought the area was just for him.”
Gazza, 51, had been directed to the room at the Sky Sports studio in Isleworth, west London, before the Saturday morning show.
He was found naked in a chair, watching football on TV.
The source said: “One of the production crew had gone to get him a shirt and jeans while he got undressed from the clothes he’d arrived in. When a senior make-up artist came in he was in a state of undress.”
A clothed Gazza went on to chat with hosts in the August 11 programme. But after 45 minutes he cut his appearance short, saying he was unwell.
He took to Twitter to rubbish suggestions he had been drinking — blaming sleeping tablets he had taken the night before.