Monsterfy Lady Gaga is a Dress Up game on PFreeGames.com. You can play Monsterfy Lady Gaga in your browser for free. Lady Gaga is now getting ready to head to the famous Monster High with the precise tasks of holding a private concert for her super special ghoul fans. Frankie Stein, the one in charge with its organisation, came up with this crazy idea of turning her into one popular monster