Taylor Swift is going to be a bridesmaid! The "Shake It Off" singer announced the news on her Instagram, showing a letter from her childhood best friend Britany Maack asking her to take part in her big day.

CLICK HERE FOR PHOTOS OF TAYLOR AND HER BFFS!

In response, the 1989 star wrote, "YEAH I WILL."

taylor swift bridesmaid

These two besties have known each other since their Pennsylvania years, when they bonded over their love of horses. But seriously, they go way back — Taylor was making adorable phone calls to her friend when she barely knew how to speak.

We're glad that the singer is going to play such a big role in her friend's nuptials! But knowing how much she cares about her BFFs, we shouldn't have been surprised. She's probably going to be the best maid of honor ever.

Do you think Taylor will be the best maid of honor ever? Click through to see more photos of Taylor and Britany's friendship, and let us know which one is your fave in the comments!