The TV mogul, who was honoured with a Jean Hersholt Humanitarian Award on Sunday (26Feb12), admits her Oscars debut was "one of the most horrible nights of my life".
Appearing on comedian Jimmy Kimmel's post-awards chat show, she explained, "I had used Dolly Parton's dressmaker... He'd come over to do some fitting early in the day and then said, 'I need to take it back'. When he brought it back, I didn't try it on and so when I went to put it on half an hour before going to the Oscars it didn't fit; I couldn't get it up over my hips.
"My hairdresser... had to lay me on the floor and push my butt down... I rode to the Oscars... planked in the back of a limousine. When I got out everybody had gone in; there was no more red carpet... I couldn't sit in the chair."
Winfrey confessed she was praying for someone else to win the Best Supporting Actress award because "I knew I couldn't get out of the chair."
Her prayers were answered - Anjelica Huston won the Oscar for Prizzi's Honor.