Hey, don't be sexist. Why can't the definition apply to both genders?
Or are boys never too young to be sexually knowledgable/provocative? 
Knowledgeable? Yes, they're definitely usually too young when they start to have any sort of knowledge!
Does that stop them from doing so anyways? Not on your life!!

Anyhow, I'm also technically too old to be a Lolita, myself. Genders aside.