Gravity Girl
From superman.nu: Supermanica
Gravity Girl
One of many brief aliases that Lana Lang employs in her ongoing quest to discover Superboy's secret identity. Lana assumes the identity of Gravity Girl with the aid of an alien anti-gravity belt that grants her flying powers. Wearing a lead mask, Lana becomes Gravity Girl, and gives Superboy competition in Smallville (Adv No. 285/1, Jun 1961: "Gravity Girl of Smallville").