One of the season's hottest looks, the topknot, shows no signs of slowing down. While celebrities have been sporting this tried and true up 'do for seasons now, the latest way to do it is with an amped-up twist. Singer Monica sported a bird's nest bun at the BET Awards, for instance, while Katy Perry accented her voluminous version with a pretty gold headband and purple highlights. Socialite and philanthropist Michelle Harper brought the style back to its ballerina roots, although her hanging, flipped hair in the back made for an avant-garde feel. It's three different looks from three different ladies: whose hairstyle stood out the most to you?