7th Heaven (1996)

S02E07 Girls Just Want to Have Fun

Simon finds himself developing feelings for his best friend's sister, Karen, who is part of a gang. Meanwhile, Lucy seeks to assert her independence by applying makeup and dressing provocatively with her friends to attract boys at the mall, but she gets discovered by Annie and Ruthie. Additionally, Ruthie sparks curiosity within the family as she probes them about the concept of the speed of light, leading to amusing discussions.