The Cat in the Hat Knows a Lot About That! (2010)

Season 1: Episode 11

Nick and Sally are playing dress-up but something's wrong with it: Sally's princess dress has torn (and Sally's mom doesn't have any silk thread to fix it). The Cat takes them to see his good friend Mindy, the silkworm who shows them how she makes silk by leaving out the cocoon. Sally uses the silk thread to fix the "swirly-twirly" princess dress to finish dress-up.