For blogger and entrepreneur Chiara Ferragni's 30th birthday, she invited all of her friends to Venice, Italy. They were wearing customized Alberta Ferretti sweaters [1] that read "Chiara." But if that wasn't enough of a statement, Chiara celebrated her special night in a shimmering Saint Laurent minidress, which was later embellished by a brand-new ring from her new fiancé, Federico. Scroll for a quick snap of the gorgeous sparkler that shines brighter than the most luminous dress at the party.