Questions: Fashion & Beauty

So the question I was asking myself is, whether girls like them (obviously they do, as I see them all the time [which drives me crazy]). And how you wear them. Like above, below, half-way on the bellybutton or not at all for few reasons. And guys?

My girlfriend would've asked this herself, but she doesn't use Reddit, Quora, GirlsAskGuys, or any of these websites.

For the record, me and all of her friends said her dress isn't too short, but she wants opinions from an "unbiased party."

The dress doesn't look that short to me, but she usually wears dresses that end only an inch or two above the knee, and that one is around mid-thigh.

She said she's been working out her legs, and wants to show them off more.

She said this dress makes her feel both extremely confident and self-conscious at the same time. That she loves how it looks on her, but she's not used to exposing so much of her legs.

So is it better when women wear dark or light shorts when wearing black shirts or tops?

Also, should both women wear belts with their shorts or is it just not that necessary? Is if better without belts?

Please share your views in the shorts with black tops that these women are wearing!