The 'Red' singer, who is known for her brilliant fashion sense, apparently does not want to miss a chance to look inappropriate, reported Us magazine.
"She spends an hour in the locker room post-workout so she can look flawless for the photographers who follow her," a source said.
Swift, 24, has been training with Justin Gelband, who is responsible for many Victoria's Secret models.
"Karlie turned her on to this gym a few months ago, and when Taylor's in New York, she goes daily," the source added.