The singer has revealed a new set of concept teaser images to continue gearing up for her return, perfecting the vintage mood with vintage fashion, rural settings, and film-camera-style numeric labels on her teaser photos of her album's release date. The singer has yet to reveal what her title track will be.

Take a look at IU's concept photos below while you wait for 'Flower Bookmark Two', coming this September 22! 

SEE ALSO: IU to become the first Korean solo artist to hold a show at the Philippine Arena in June