The singer was joined by Gigi Hadid, Martha Hunt, Hailee Steinfeld, Cara Delevingne, Selena Gomez, Serayah, Mariska Hargitay, Lily Aldridge and Karlie Kloss ... or basically, everyone from the "Bad Blood" music video.
Swift looked gorgeous in a sequined crop top and matching pants, sporting one amazing cat eye and fresh lip. While we also love Cara and Hailee's simple and stunning ensembles, Gigi's bold yellow and too-dark tan were a bit much.
Miley Cyrus also made us do a double take when she arrived, wearing about as much fabric as we'd expected to see her wear. The host of the evening wore a "dress" that consisted of silver overalls covering her nipples, a nude leotard bottom and what looked like a chandelier hanging from her waist.