In March 2008, the album was re-released and re-titled "Baby Baby". A third single, "Baby Baby", was used to promote the album. A digital EP featuring Jessica, Tiffany, and Seohyun was released on April 2008, titled "Roommate". The single from the mini-album is "Oppa Nappa" (, lit."Bad Brother", although contextually it refers to an older male friend).