From Kate Humble to Helen Mirren, Robbie Williams to Brad Pitt, meet the stars who love to moon… Tonight, in an interview with Piers Morgan, Bear Grylls will reveal his penchant for naked swimming in open water (9pm on ITV). But he’s not the first celeb to share his passion for a nudey frolic in the wilderness. Did you know this lot are all big … Continue reading Celebrity nudists: the stars who like to let it all hang out