Taylor Swift became her best friend Britany Maack's Maid of Honor.
They have know each other since small.
Back in May, she told PEOPLE about being invited as maid of honor by her best friend, 'I've never been a maid of honor before. This is my first time, and it's really, really important to me because this is my best friend, who I've known since I was born. And she's marrying [Benjamin LaManna] someone I've known since I was 4.'