Malcolm in the Middle Season 4 Episode 10
Overview
After being rattled by a battle among the boys, a pregnant Lois ponders the consequences of raising another brawling kid. So she fantasizes that her unruly sons have morphed into well-behaved young daughters. Malcolm becomes Mallory, Reese is transformed into Renee and Dewey turns into Daisy.
Director: Ken Kwapis
Guest Star: Dona Hardy, Howard George, Jeff Rosenthal, Jennette McCurdy, Lane Toran, Lisa Foiles, Michelle Anne Johnson, Mimi Paley, Patricia Bethune, Scott Dreier