Simsimay has clothes that are cute & modern that are hot, but not slutty (i didn't know what other word to use lol) They also look really good in the game. Her TSR or website. If you're not a subscriber at TSR, you can find clothes at the booty.
Saliwa also has clothes you might be looking for. Her
TSR or blog.
I'll just give you a list lol:
Icia TSR or blog
All About Style
JS Sims - Might not be too much of what you're look for, but there's nice leggings you might want to look at.
Rusty Nail - Nice dresses, swimwear, lingerie, and shoes.
Melisa Inci & Altea127 having nice shoes
I hope this list helped. If it didn't, I'd be happy to look some more.
*Remember if you're not a subscriber at TSR, go to the booty. They haven't updated the TSR section since April 7, so newer downloads wouldn't be there, but older ones will.