Mario Lopez and Ali Landry
Length Of Marriage: 18 days
Let this be a lesson to you, ladies: Be careful if your boyfriend is prettier than you. Former Miss USA Landry met Lopez at the Miss Teen USA pageant in 1998 when she was a celebrity judge and he was emcee. They started dating and were together for six years before their 2004 wedding. The marriage fell apart almost immediately when it came out that Lopez had allegedly cheated on Landry multiple times.