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Ever wonder what Taylor Swift does with all her famous BFFs?! Well, guess what?! It's pretty much no different from what every other group of besties do together - rock out in the car to your favorite jams! 

Over the weekend, pre-Meredith attack, Taylor posted an Instagram video of her and the HAIM ladies in the back seat of the car, as they all belt out Faith Hill's classic "This Kiss." The girls were celebrating Este's 29th birthday (Happy Birthday, Este!).

Taylor wrote along with the video, "Happy Birthday, Este!! Ever since you, Alana, and Danielle adopted me into your wolf pack, life has never been the same."

Watch Taylor and HAIM cover Faith Hill's "This Kiss" below!