Here's the full episode of Season 4, Episode 10 of Family Guy, Model Misbehavior!

Plot: When the Griffins visit Lois' parents, Lois realizes that her father prevented her from fulfilling her lifelong dream of becoming a model, so she returns to Quahog and hits the catwalk.  Lois is an instant hit, but the glamorous world goes to her head and Peter has to step in to get her back on track. Meanwhile, Stewie starts a pyramid scheme business and hires Brian as his assistant.