You're also too pretty for math : Aetiology
You're too [pretty/young/female, take your pick] to be a microbiologist! : Aetiology
This is our own Roland98 for those that don't know her because she is way too busy and important for
apparently.
I have always admired (aka been jealous of) Tara for being such a young and attractive PhD, but not because she is a woman, but because there aren't many PhDs running around that are under 30 with model good looks. My niece is soon to be one of them, so you can add one more in about 3 years.