Lol, I was wondering the same thing. She also describes herself as having a thin and petite figure

A few years ago, I asked that same question regarding slim/thick. It was explained, thin upper torso, thick on the bottom. Things have changed these days, but maybe it thin/thick hasn’t changed in meaning.

It's like jumbo...shrimp! 🤣🤣

On a side note I don't see anything at all resembling the thick part. I see slim... slim. Usually that's a no, and no for me!