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Molly Sims showed off her new cushion-cut engagement ring for the first time over the weekend, when she attended the 10th Annual Chrysalis Butterfly Ball (the non-profit organization honored her producer fiancé Scott Stuber for his philanthropic efforts). “I love everything about it!” Sims beamed when she told us of her new accessory, adding that she has “no idea how big it is.” “He designed it. He did it with my girlfriend on his own. He surprised me; I never sent him a picture. He did it all.” As for the actual proposal, Stuber went for a Mr. Big-get-down-on-one-knee-in-the-closet moment. “He flew my parents here to see me and proposed in my closet,” Sims said. “I had just closed escrow on my house. I was having trouble having his house be our house. He was like, ‘This is our house and our life and our future.’” How Sex and the City-romantic of him!

— Reporting by Lindzi Scharf