More swimsuits and bikinis for women, including some sporty ones.
More masculine clothing for women, and not just men's clothes that look terrible when awkwardly warped over the feminine frame. Suits, jackets, dress shirts, vests, dress shoes, shorts etc. As well as bigger, looser clothing, long sweaters or hoodies, high-rise pants plus outerwear that actually protects against the cold (read: covers the neck, midriff and arms).
Clothes for goths, punks and rebels, clothes with attitude, second-hand clothes, rapidly disintegrating clothes, dirty clothes, modded clothes...generally speaking clothes that have character, that reflect different ways of living.
More clothing in general for children, they're missing so much. I would especially appreciate some more modern clothing for them: skinny jeans, loose hoodies of different lenghts, casual skirts and dresses (ie. for everyday use, not just formal situations), baggy pants, stuff like that.