Exclusive: All the Details on Deanna Pappas' Engagement Bash!

Love times two!

Party goers got a double dose of fun Sunday night at Hollywood hotspot Las Palmas -- where former Bachelor and Bachelorette stars Deanna Pappas and Holly Durst feted their engagements to twins Stephen and Michael Stagliano.

VIDEO: The couples tells Us about their engagement

As first reported by Us Weekly, Pappas, 28, and Durst, 27, met their identical fiances, 26, at a 2009 party for 2009's The Bachelorette: The Men Tell All special. Stephen asked Pappas for her hand in May, while Michael (who starred on season 5 of The Bachelorette) popped the question to Durst in June.

At the double-engagement bash, attendees munched on Italian and Mediterranean fare (in a nod to the twins' and Pappas' family heritage, respectively) -- plus glittery white and silver cupcakes.

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In attendance: Bachelor Pad stars Tenley Molzhan and Natalie Getz (who is Durst's roommate). A high point of the night, reports one insider: when the entire wedding party did a special dance to Michael Jackson's "Thriller"! The two couples slow-danced to Leona Lewis' "Bleeding Love." (DJ Lindsay Luv spun the evening's tunes.)

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"Our engagement party was magical!" former Bachelorette Pappas tells UsMagazine.com. "It was filled with family, friends, laughter, and tons of love! We had a blast at Las Palmas....[I] want to do it again every night!!"