Simpson reveals naked party prank

Ashlee Simpson has admitted that she once crashed a party without any clothes on.

The singer claimed that she used to enjoy upsetting her older sister Jessica so much that she dashed around nude when she had friends visiting.

"I used to wind my sister Jessica up," said Ashlee. "Once, when I was small, Jessica had all her friends round and I burst into the room naked."

Earlier this month the popstar confessed that when she first met her husband Pete Wentz she flashed him. The pair married with an Alice In Wonderland-themed wedding last week.

> Click here for our video interview with Ashlee Simpson