The Simpsons (1989): Season 23, Episode 22

23 - 22: Lisa Goes Gaga

Lisa tries to reverse her status as one of the least popular girls in school by ghostwriting positive things about herself on the school blog. When her plan backfires, her social ranking plummets to a new low - until a psychic force tells Lady Gaga that Lisa needs her help. With Gaga's assistance, Lisa and the entire town of Springfield realize that being yourself is better than being like anyone else.