Pamela Anderson has had a “beautiful, messy life”. The 57-year-old actress thinks her “life experience” helped her with her starring role in ‘The Last Showgirl’, the Gia Coppola-directed drama movie. Pamela – who plays a seasoned showgirl in the film – told Entertainment Weekly: “Having a beautiful, messy life is something incredible to draw from, and sometimes I’ll look back on my life and think, I could have done this differently, but you need the life experience to be able to look back and say those things. “I do love the craft of acting and I have taken a lot of private lessons and, finall…