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Gregg DeGuire/Rebecca Sapp/WireImage
Not all celebrity marriages are known for their long lasting commitment—check out the couples who didn't last past the honeymoon period or, in some cases, till the honeymoon.
The pop princess' first marriage, to her longtime friend Jason Allen Alexander, lasted for a whopping 55 hours in January 2004, meaning it took that long for the pals to realize they better get in the annulment line—which in Las Vegas is at least next to the buffet line.