Secondary the armour has to fit comfortably that means that female armour should have a feminized shape.
After the padding and underarmor the comfortable fit actually comes out to look like a guy, realistically speaking, but honestly, this isn't a realistic game anyway.
When I was younger I was in the SCA with my girlfriend, who had large breasts and when we would spar she would actually strap her breasts because they would hurt if they moved around too much. Naturally, being the horny young man that I was, I couldn't really envision the instance with them bouncing around being a bad thing.
As for the game having form-fitting armor-I don't really care one way or the other.