The royals got a little taste of Hollywood last month! Cameron Diaz wound up on the treadmill next to Prince Harry at London's KX gym. Apparently, the 26-year-old red-headed royal put his towel on Diaz's machine; just when the 38-year-old actress was about to ask for the towel to be removed, she realized who was working out beside her!

For more on this surprsing encounter, watch this week's Hot Stuff video, hosted by Senior Editor Ian Drew.

Also in the roundup: More details on Sean Penn and Scarlett Johansson's split, Kim Kardashian's prenup, Jim Carrey's bad attitude on set and more.

Watch the exclusive clip now!