2012 Teen Summer Fashion Trends. The hottest looks and trends to wear for summer 2012 for teens. Looking good for summer is a must and if you're a teen you always want to look your best no matter the season, but especially for summertime. Look below for the hottest looks to try for summer 2012. 2012 Teen Summer Fashion Trends Sea Colors ( turquise, blues, whites, and navy colors of the sea)