Simplify the following text for a Grade 9 native English-speaking person.
Original: The third annual WrestleMania Art ( formerly WrestleManiArt ) , an art exhibition and auction featuring work by WWE superstars , was held on March 24 at the Make-A-Wish Foundation National Headquarters .
Simplified: The third yearly WrestleManiArt , an art show and auction featuring work by WWE superstars , was held on March 24 .