Forget bold neon or even pastel. This season's yellow nail polish look is a pure, unadulterated take on the bright, cheery hue. Think: taxicab, yellow-jacket, and buttercup-flower yellow. Seen recently on stars like Leona Lewis (left), Jenna Elfman (upper right), and Jessica Szohr (lower right), the warm-colored polish is a great accent to Summer's breezy wardrobe choices. To add a little flair, take a note from Jessica, who opted to pair her two-tone polish look with a reddish-orange lacquer. There's nothing mellow about that yellow. Try: Rescue Beauty Lounge Yellow Fever ($18) or Zoya Creamy ($8).