All right, I’ll explain my body to you. I’m going on vacation in a week and I need a new swimsuit. I have a golden-y skin tone (I’m asian) and I’m very short : 5′ and 123 lbs. I have kind of large legs, that i want to elongate, but I’m comfortable with them. I need suggestions on color and style and cut of swimsuits.. my belly is kinda flabby and not defined, so I’m thinking a tankini.. and I want to be pretty modest. I’m also 15, so I want to look young and alive.. please help! thanks!

I think a tankini would look awesome for your upper body if your a little "flabby". If your bustier though, you should have halter tankini (http://www1.macys.com/catalog/product/index.ognc?ID=223983&CategoryID=17290&LinkType=EverGreen), but if your smaller try a strapless tankini(http://store.delias.com/item.do?categoryID=1501&itemID=46764&sizeFilter=&colorFilter=&brandFilter=). For you bottom, I’ve heard that swimsuit bottoms with a higher cut elongate legs. But since your legs are larger I would go with boy shorts (http://store.delias.com/item.do?categoryID=1502&itemID=46757&sizeFilter=&colorFilter=&brandFilter=) or maybe a skirtini (http://store.delias.com/item.do?categoryID=1504&itemID=46771&sizeFilter=&colorFilter=&brandFilter=).
Pretty much any color would look good on you, but try not to get white, its not the greatest of swim suit colors.
Try looking at the junior’s department of Macys, Nordstrom, pretty much and department store, or Delia’s, Alloy, Wet Seal, and Old Navy for cute swim suits.
Hope this helps!