The clothes that we wear might define who we are by showing that we like something or where we come from. Also how we might be “grouped”, like jocks, hipsters, popular kids, and geeks or nerds. Another way is by showing how much we care about our appearance, which may resemble how much we care about other things too. I hope that this helped!
'Lamb to the Slaughter' is told by an outside narrator from a limited third-person perspective. Dahl chooses to only reveal what Mary Maloney is aware of.