Bellow are some fab pieces that I've found recently.

This great top from lulus.com is great for summer. The tie at the waist adds a relaxed feel for comfort and the cut out shoulders add sex appeal in a classy way. For under $40 you cant go wrong with this beauty.
http://www.lulus.com/products/appian-way-white-top/37697.html

This romper from greatglam.com is a staple for the hot weather. It can be dressed up or down. And its only $32.80
http://www.greatglam.com/pd-amaze-white.cfm

Another great peice for hot weather is this simple but chic dress from alloy.com
http://store.alloy.com/item.do?categoryID=2543&itemID=53635&outfitID=1592&sizeFilter=&colorFilter=&brandFilter=