The most stunning celebrity sparklers worn by Jessica Biel, Beyoncé, Drew Barrymore, and more!

Allison William's Engagement Ring

Since her February 2014 engagement, Girls star Allison Williams has been rocking a classic, round-cut solitaire diamond ring from fiancé Ricky Van Veen. "I'm obsessed with it," she told Seth Meyers after her engagement.

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