Hairstyles for prom would become one trend, moreover if combine it with some cute accessories when prom party.The number-one rule for prom is you gotta look good, preferably sexy. And to look good, you have to get the hair and prom makeup right. We've handpicked hundreds of hairstyles for 2011 that aren't ugly, dated or wrong, wrong, wrong (tiaras, anyone? Leave that for the prom queen). Most Popular Prom Hairstyles Trends for 2011 This year, prom is all about a relaxed, casual look. Prim updos have been replaced by long waves pinned back, braids, twists, romantic, soft updos and messy buns.