26. Pierre Casiraghi of Monaco
The son of royalty (Prince Albert II of Monaco) and the grandson of Hollywood royalty (Grace Kelly was his grandmother!), Pierre Casiraghi lived up to his bloodline with a jaw-droppingly gorgeous wedding. His beau, Italian heiress Beatrice Borromeo wore a stunning four separate wedding dresses during the festivities. American singer Lana Del Rey attended the wedding with her Italian photographer boyfriend, Francesco Carrozzini. The dynamic duo met in 2008 while they both were students at Milan’s Bocconi University.