My advice is wear what you want. If you feel good wearing shorts, then go for it. If you think halter tops look good on you, then go for it! :) It’s your body and clothes, so you’re the boss! But yeah, I assume that’s not the advice you want to hear from me. Haha.
The first thing you need to do is study your own body. What are the things you want the people to notice? What are the things you want to hide? Determine these things and work from there. But generally speaking, you must avoid horizontal stripes, tight garments and shapeless oversized shirts. Wear something that’s not tight-fitting, it should instead be skim through your contour.
If you want to wear prints, wear it cautiously. There are SOME prints, like tights, that won’t work for petite and chubby people. What I’m saying here, not all garments are created for your body type.
I already answered a similar question, please see my other answers here.