The Vortex Costume was a Costume that was part of an Account Upgrades set in January 2009, but has been retired and forgotten about ever since. Marapets has updated and renamed the costume; the Tornado Costume's Account Upgrade was released with 8 new tornado themed items, including the Vortex Park Reservoir Treasure Map, which was the main prize. It retired on July 31st. If you put this on your pet, they will have a tornado right behind it, be stuck in it, or be riding on it. Tornado pets are grey and the costume has a tornado with a Grey Costume. The Costume also pays homage to the film The Wizard of Oz.