I just think that people take me a little more seriously as a brunette. I don't know if that's just because of a societal preconceived notion that all blondes are stupid but it's a different kind of attitude.
I never meant to be in romantic comedies; it's just what ended up happening. But they are tricky, in a post-1960s sexual revolution way. It was easier when you couldn't have sex scenes: everything crackled very nicely. They're not easy.