Sienna Miller has been spilling the beans on her sexual exploits (for all those who want to hear...) Sienna admits she lost her virginity at the age of 16 and that her mum encouraged her to bring men home. According to the source, Miller said she had her first sexual encounter in her own bedroom. The actress said, "I had my first serious boyfriend when I was 16 and my mother made sure I brought him home. It was a very open household but I only brought home guys I really liked." The blonde has been causing quite a stir filming steamy love scene with co-star Hayden Christensen for new film Factory Girl. The scene is so realistic that rumours have been circulating that it wasn't fake and that Miller, 25, and Christensen, 25, had full sex in front of the cameras. | 
