Lena Dunham Is The Latest Friend Of Taylor Swift's To Be Added To Her Bad Blood Music Video -- Check Out The Full List HERE!!

This might just be the most star-studded music video of all time! By now, you've probably seen at least one of the celebs that Taylor Swift has enlisted for her new single Bad Blood. First we saw Zendaya, then on Sunday we learned about Hailee Steinfeld's involvement, and now Lena Dunham has officially joined the cast, as