Kate Hudson at the Clear History Premiere | Pictures

Kate Hudson Reveals Her Special Connection to Prince William

Kate Hudson stars in Clear History, which will air on HBO.

Kate Hudson showed off her killer legs in a blue Balmain minidress and Casadei pumps when she arrived at the premiere of Clear History in LA yesterday. The new film, which debuts on HBO on Aug. 10, is the latest project from the mind of Larry David and stars Kate alongside Eva Mendes, Jon Hamm, Amy Ryan, and Michael Keaton. Other guests at the red carpet fete included former Hills star Kristin Cavallari and Entourage's Perrey Reeves.

Before attending her latest film's big debut, Kate made a pit stop at The Tonight Show to share her interesting connection with Prince William. She revealed that William, Prince Harry, and Princess Diana once stayed at her family's home in Snowmass, CO, when the two princes were young. While Kate and her parents were in LA at the time and didn't get to meet the royal family, she did reveal that William politely called up Kate's dad, Kurt Russell, to ask for permission to use their ATVs. Kate said, "When my dad got off the phone he said, 'That's a really well-raised boy.'"