Backstage Joni Top in Black. - size L (also in ) Backstage Joni Top in Black. - size L (also in ) 100% cotton. Hand wash cold. Elasticized neckline and hem. Tie accents at sleeves. BACK-WS139. 73 419 742. Backstage is an Australian made clothing label that has street style, a bit of glam and a lot of rock. Backstage is influenced by music & the arts. Sequined, striped, or draped, Backstage is a line designed for girls with a rock and roll attitude.