Katharine McPhee and Daily Hot Shots

Katharine McPhee

Hollywood starlets weren't the only constellations that shined bright when Van Cleef & Arpels and In Style hosted an intimate dinner party to showcase the famed jeweler's most exquisite collections. Guests like Katharine McPhee, Rumer Willis and Kat Dennings marveled at the jewelry—including an 82-carat yellow sapphire necklace valued at $660,000, and a 43-carat aquamarine necklace valued at $405,000—on display, which was wrapped around the necks of statuesque models in dresses by Ports 1961.

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