Long, layered, multi-chain necklaces have been a HUGE hit this summer, as evidenced by newlywed Hilary Duff, who wore the popular trend to the Teen Choice Awards last week. We love how these necklaces are versatile enough to dress up everything from basic tees to ruffled, feminine dresses. To nab Hilary's style, try this Wrapped Pearl and Chain necklace by Guess ($30). The pearls and metal provide a great balance between girly and grunge, and the braided chains really give the piece some dimension. Charlotte Russe's Chain and Sparkle Galore necklace is also a nice option with its colorful mix of gold, silver, and crystal strands. And at $12.50, you can pick up two or three pieces to really build volume. Tell us, are you layered up and ready to go?