The concert which will be livestreamed through Amazon's Prime Video service starting at 9 p.m. ET.
Actress Jane Lynch (Glee, The Marvelous Mrs. Maisel) will be hosting the event.
Prime Day is Amazon's two-day shopping event exclusively for Prime members that will take place July 15-16.
Swift's next album titled Lover will be released on Aug. 23. The album will contain the singles "ME!" and "You Need to Calm Down."