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15. Sofia Vergara and Joe Manganiello - 2015
Estimated Cost: $4 million

This unbelievably gorgeous couple tied the knot at The Breakers Palm Beach in Florida and spared no expense, especially when it came to the flowers. They reportedly spent $1 million on just the flowers alone! The food cost about half that. Oh, and there was a surprise performance by Pitbull during the reception. Here's another awesome detail: The newlyweds asked guests to donate to St. Jude's in lieu of wedding gifts.