Not only would Taylor Swift be a sweet and adorable bridesmaid -- we bet she'd cry when you say "I do!" -- but she would be the perfect person to perform during the ceremony. Who's better at creating gorgeous guitar ballads based on real-life romance? An original song about the bride and groom could be even better than the oh-so-trendy original vows. Just make sure not to get on Taylor's bad side before the wedding -- because you know she could write a song about that too!