Princess Rodericka Gawayn : Season 1 Episode 9

When Roderick accidentally dismisses the role of a princess and sorceress, Elspeth's says a spell that puts him in woman's clothing to teach him a lesson. At that very moment they're captured by Prince Haaak who was hired by Rex. But surprise! Prince Haak immediately falls in love with Roderick. They're to be married shortly unless William can come up with a plan for escape.