Across the Pond! Samantha Harris Blogs From London

Standing in front of St. Paul's Cathedral, ET's Samantha Harris blogs from London, England about her chats with the late Princess Diana's brother Charles, 9th Earl Spencer and the 'Prince of Persia' Jake Gyllenhaal.

"He was so wonderful to share so many of the stories of her wedding day, his memories," Samantha recalls her talk with Spencer about Princess Di's royal wedding. "The cool thing is, he still has a little something from her wedding. ... We girls like those wedding details."

As for the bulked-up actor playing the 'Prince of Persia,' Samantha describes Gyllenhaal as a "humble, real, hang-around guy." Watch ET this week to see more of Samantha's journey across the pond!