The singer's latest post in March also gave a shout-out to her friend, Lorde. Swift hasn't posted an Instagram of herself since early February, and has only made a handful of public appearances since the New Year.
A source told ET last month that the "Bad Blood" singer "has been busy working on her upcoming album," which is expected to drop by the end of the year.
According to ET's source, Swift has managed to stay out of the spotlight by spending time in Nashville, Tennessee.
"She comes here to get away from the paparazzi,” an eyewitness suggested to ET.