Bombshell Miniatures, as its name suggests, has tons of awesome female miniatures. They have, in fact, an entire page on their webshop just called "Babes." But if you think there's just a bunch of scantily clad, character-less bimbos in there, I hate to disappoint you. You're way off. The bombshell babes are the most diverse set of female sculptures I've ever seen in one place. Sure, there are some bodacious beauties in there, and they are all beautiful in some way, but you've got choices, my friend. You want modern, futuristic, or fantasy? Check. You want strong women in full armor or formidable action poses? You got 'em. Astronaut, pirate, ogress, robot? All in there. If you can't find a female mini on Bombshell's website that you like, you probably don't like female miniatures.
The only tough question is, with so many awesome minis, which one do you pick when you want a model just 'cause?