Crossover armor goes with the Crossover update,
Diamond shop item
Crossover Armor: 3 Diamonds, member
Crossover Gauntlets: 1 Diamond, non member
Crossover Tail: 2 Diamonds, member
Mask: 2 Diamonds, non member
the items are based off of: Miraculous Ladybug, Wizard of Oz, Sonic the hedgehog, and Donald Duck.