Teen starlet Hayden Panettiere hates being patronised because she's blonde - insisting she is secretly super-intelligent. The 17-year-old Heroes actress enjoys proving her critics wrong when they meet her and realise how smart she really is. She says, "I find it funny to watch people patronise me or think I'm dumb because I'm blonde and young. "I know I have a higher IQ than 99 per cent of the brunettes out there. It gives me more of a sense of accomplishment when I achieve things after people have underestimated me."