Jessica Biel is desperate to turn ugly and gain weight for a gritty film role, in a bid to prove her acting ability. The Blade: Trinity actress wants to prove herself on the big screen and believes she will only obtain respect in Hollywood if she transforms physically like Oscar winner Charlize Theron did for 2003's Monster. She tells MTV.com, "I always want to try something completely different from what I just did. I would definitely love to take on something that is physically totally different from what I look like and what I'm used to doing, do something like a Monster. It's a dream. "I have to push myself and try something I've never tried before, put myself out there, be vulnerable and really take a huge risk."