From the manufacturer:
 
Monster High has resurrected your favorite rockabilly ghoul for April Ghoul’s Day! Dressed in capris, kickin’ kicks, and a puff-sleeve jacket, Operetta is ready to rock your shelf display. She comes with her trusted guitar and sidekick Memphis, plus accessories to boot. Don’t miss your chance to snag this ghoulishly glamorous siren before she returns to the catacombs.
Monster High® Operetta™ Doll 
Doll is 10.5 inches tall with 11 points of articulation 
Wears a puff-sleeve jacket and capri jeans 
Comes with a diary, brush, guitar, and her pet Memphis “Daddy O” Longlegs  
Packaged just like the original G1 doll with a few added Easter eggs