Girls’ Generation‘s Tiffany and Sunmi will reportedly be joining Mnet‘s girl group audition show Girls Planet 999 as mentors.

According to an exclusive report from SPOTV, Tiffany and Sunmi will be joining Girls Planet 999 in mentor roles, also called “K-Pop Masters.” They will be two of the mentors for the 99 trainees, sharing their girl group know-how they have gained after years of experience. Mnet has since confirmed their appearance.

Both Tiffany and Sunmi have experienced the highs and lows of the idol industry, and are currently loved by fans around the world, which makes them perfect mentors for the young trainees seeking to achieve their dream. Sunmi’s appearance is even more anticipated following her success as a mentor on JTBC‘s Sing Again.

Actor Yeo Jin Goo has been confirmed to be the MC for the show. The 99 girls will began their dorm life back on June 7, and the show is expected to begin airing in August. Cherry Bullet members were reported to have auditioned for the program as well as CLC’s Yujin.