Kelly Osbourne has revealed she'd had a problem finding the right underwear for her Oscar dress.

"I couldn't wear Spanx with this dress so this lady came and taped me in the front," the Fashion Police expert revealed at Elton John's Oscar Viewing party.

Laughing, she added: "It really hurts but pain is beauty!"

The young star looked glamorous in a grey gown made by Lebanese fashion designer Tony Ward.

"At the end of the day, it's always about how the dress makes you feel and this made me feel really pretty," she admitted.

Kelly told reporters she loved commentating on this year's best red carpet gowns for E!

"Oh my gosh it's so scary because I start becoming a looky-loo and forgetting I'm there to do a job. It was such a fun thing to be a part of, but now I'm ready to have some fun and some dinner because I'm starving!" she said.