Totally Spies! (2002) : 4x5

It's that magical time of year again – time to crown the new Miss Beverly Hills. Among this year’s hopeful contestants are Mandy and Clover. In order to get that extra winning edge, both Mandy and Clover unwittingly decide to get a special full-body makeover that promises to make their hair, smiles, eyes and even their attitudes bigger. But as they are getting their treatment, a shadowy figure sneaks into the spa and puts a microchip into Mandy’s machine. At first, Mandy is pleased with the results of her treatment which seems to have worked better than Clover's. She doesn't realize it at first, but as she gets larger and larger, she can't deny what's happening to her. As the spies start to investigate a rash of disappearances among Miss Beverly Hills contestants, they find out that Mandy, who has now grown nearly fifty feet tall, is behind the crimes! They also discover that along with becoming bigger physically, Mandy's meanness has also become magnified--and in an effort to win the competition, she decided to take out the other contestants. It's revealed the shadowy figure is Smalls! The spies save the contestants and Mandy attacks the spies. Smalls arrives and turns Clover into a giantess. As Clover and Mandy are fighting, Sam and Alex defeat Smalls and return Clover and Mandy to their normal size. In a b-story, Clover tries out an entire litany of ridiculous talents to find something she's good at so she can win the talent portion of the Miss Beverly Hills competition. Villain: Mandy (Diminutive Smalls).