What type of clothes should I wear?

I am 13, 5' 2'', and 132 pounds. I am a 34C sometimes 34D. I have a rather large chest. I don't really know what nice legs look like, so I couldn't say anything about those. Mmmm..my tummy is not super tiny so I never ever wear tight fitting clothes because I feel fat and have to suck in all the time. What clothes should I wear? Am I safe to wear tight shirts, or no? I am really self concious, thanks in advance! Oh, and would this skirt: http://shop.nordstrom.com/s/lily-white-banded-skirt-juniors/3094923?origin=category&resultback=710 (in black) look good on me cause I am on the larger side. Would it look okay cause it hugs my figure?