Complex sentence: She usually wears her blond hair in pigtails tied in red hairbands, and in the episode "Goes On Air," she takes off her hair ties, her pigtails staying in place (as pointed out by Arnold).
Split into simpler sentences: She usually wears her blond hair in pigtails tied in red hairbands. In the episode "Goes On Air", she takes off her hair ties, but her pigtails stay in place by themselves (as pointed out by Arnold).