DuckTales: 3x16

Attack of the Fifty-Foot Webby

Webby, who has been feeling overlooked, ends up becoming a giantess after falling into a mysterious pool in the jungle. While she is now the center of attention, she does not like it very much. While Scrooge searches for a way to reverse the process, a corrupt circus owner seeks to kidnap Webby for his new sideshow.