Jackie Chan Adventures (2000)

Season 3: Episode 11

Valmont is transformed into a 10 yr. old kid by Daolon Wong after he angers the dark chi wizard during an encounter. Meanwhile, Jade who is feeling down about being small begins to mess around with magic to help her become a little taller. It backfires as Jade begins to grow at a dangerously rapid rate. Besides attempting to reacquire the power of the horse talisman before Daolon Wong gets it; Jackie, Uncle, and Tohru must now also deal with Jade's abnormal growth spurt and a rambunctious little Valmont.