Okay kiddo, let me explain the Ivy League style of clothing to you. You know how some schools like Harvard and Yale are really famous and fancy, right? Well, back in the olden days, the students who went to those schools wanted to dress nicely to show off how smart and successful they were.
So, they started wearing clothes that were simple, but really well made. They liked things like button-up shirts, khaki pants, and penny loafers. They also wore sweaters with big letters on them to show what school they went to.
Eventually, this style of clothing became really popular with people who weren't even going to Ivy League schools. They just liked how clean and classic the clothes looked. So, Ivy League style became a big fashion trend.
Even today, lots of people like to wear Ivy League clothes because they make you look smart and sophisticated. But don't worry, you don't have to go to Harvard to wear them!