Last Sunday, Sabrina Carpenter performed her hit “Manchild” at the 68th Annual Grammy Awards . Dressed like a flight attendant at an airport — complete with a white scarf around her neck and a pilot hat — she commanded baggage claim, directing traffic while line dancing and holding a live dove. “Relationships come with lots of baggage, and the song tells the story of many relationships gone wrong,” she tells Rolling Stone in a new interview. “I also wanted to wear the captain hat.” The