Clint Brewer/Splash News; Todd Williamson/WireImage.com
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Christina Aguilera and Jordan Bratman
Estimated Cost: $2 million
The Wedding: Aguilera exchanged vows with Bratman, a music executive, in Napa Valley in 2005 while donning a $30,000 Christian Lacroix gown. The couple split in 2010.
Most Outlandish Detail: Christina carried a diamond rosary priced at $10,000.