Oscar-winning beauty HALLE BERRY shudders whenever she recalls her days as a cheerleader at high school - because she mistakenly flashed her underwear at her classmates.

The MONSTER'S BALL star, a native of Ohio, admits that a costume error when she was a teen has led to huge embarrassment.

She says, "When I was a cheerleader, I forgot to wear the little panties that matched my outfit and I had my (regular underwear) on instead.

"(No one) told me, and they let me do cartwheels and stuff! That was pretty embarrassing."