Renee Zellweger has revealed the biggest fashion faux-pas of her entire life is her high school prom dress.

The Oscar-winner, known for her red-carpet blunders, admitted that if she could go back to correct her dreadful attire, she would.

She tells InStyle: "I didn't know you shouldn't wear forest green in May in Katy, Texas.

"And the hair, I'll give you three hints: eighties, curling iron, hairspray. I defied Mother Nature and all her humidity with every ounce of tenacity and hairspray I had."

Maybe she should re-created her prom look dress for this years Oscars. It can’t have been more shocking than her tiny frame.