By Christopher Rosen
Updated February 21, 2016 at 12:00 PM EST
Credit: Sarah Barlow

Britany Maack and Benjamin LaManna had a special guest at their wedding this weekend: Taylor Swift, the bride’s maid of honor.

The pop superstar and Maack were childhood best friends, and Swift also knew LaManna at a young age. “I met her when I was 10 days old, and him in kindergarten. Now they’re married and I’m the happiest maid of honor ever,” Swift wrote on Instagram after the wedding.

Maack had previously asked Swift to be her maid of honor a year ago. It was the first time Swift was chosen for the role by one of her friends.

“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,” she told PEOPLE last year. “And she’s marrying someone I’ve known since I was 4.”

Check out photos from the wedding, as well as a look at Swift and Maack’s friendship, via Instagram brelow.