Nov. 14 (UPI) -- Victoria's Secret "Angels" at Wednesday night's annual lingerie show were serenaded down the runway by pop-country princess Taylor Swift, who interacted with models in their underwear while singing hits like "I Knew You Were Trouble."
She also sang "'My Songs Know What You Did in the Dark" with Fallout Boy.
Swift, 23, must have gotten close with several of the Angels -- she patted Cara Delevingne's backside on the catwalk and ogled Karlie Kloss' cleavage.
Angel Lily Aldridge Instagrammed a few polaroids of herself hanging out with Swift, Delevingne and Erin Heatherton.
"Besties!!" she captioned the snap.
In turn, Swift tweeted "The best things always happen on the 13th!"