Pixie Lott was left feeling “broken” after starring in London’s West End. The 33-year-old pop star has revealed that she struggled to cope while she was appearing in a stage production of ‘Breakfast At Tiffany’s’. Pixie told The Sun newspaper’s Bizarre column: “It was based on the book, not the film. “The film is a lot lighter. But in the book she loses everything – her husband, her baby, her life, her cat. Everything. “By the end of the show, I was on the floor of the stage crying my eyes out. Night after night after night for about a year, eight shows a week. “I ended up doing that more than…