Taylor Swift is the ultimate bridesmaid!

The 27-year-old singer was spotted in Martha’s Vineyard,

Massachusetts, on Saturday, accompanying her best friend,

Abigail Anderson, on her wedding day.

Wearing a lovely burgundy sweetheart top maxi dress, with her curled golden locks and signature red lipstick, Swift held the back of Anderson’s wedding dress while entering the church for the ceremony. It’s unknown if Swift was the maid of honor.

The “Look What You Made Me Do” singer and Anderson have been BFF’s since high school, Swift even added Abigail’s name to her song “Fifteen.”

Taylor Swift Lends a Helping Hand at BFF Abigail Anderson's Wedding

Anderson announced her engagement in June of 2016 with a romantic Instagram pic of herself and fiancé Matt Lucier kissing, while showing off her ring. The newly-engaged couple then threw an engagement party, which Swift attended.

Taylor Swift comes out of hiding for friend's wedding | Page Six

The bride celebrated her bachelorette party in Cabo San Lucas, Baja California, at the end of July, though based on Anderson’s Instagram snaps, Swift was not present.

Taylor Swift is a bridesmaid at best friend's wedding | Daily Mail Online