13 Dazzling Star Sparklers

These gems have five Cs: cut, color, clarity, carats and celebrity! See the big bling worn by Hollywood's most engaging women

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AVRIL LAVIGNE

One thing wasn't complicated about Lavigne's engagement to Nickelback's Chad Kroeger: the ring. The Canadian rocker chose a 14-carat, pear-shaped jewel to present to his girlfriend of six months when he got down on one knee Aug. 8.