I have not seen it, but in some cases one might confuse effortless effort for visible effort.

Effortless effort is pretty universally appealing in most facets of life. The person who casually rides a bike up a hill generally looks better than someone who's pumping and struggling.

In my mind, with appearance, someone who looks like they're trying too hard often suffers that as a penalty to how they're evaluated. But the person who did put effort in without it being obvious will probably come out ahead.

See also: men who say women look better without makeup. Woman comes in to work without makeup. Men respond with "oh my God are you ok? You look unwell". The woman was wearing makeup, but it was subtle and men didn't notice.

Though there's also the halo effect and intimacy. Someone in sweatpants can ping as Hot because that signals intimacy. Different facet of the evaluation.

Someone who's really good at guitar will ping Hot because of the halo effect. That is- when someone is good at one thing, we think they're good at everything, where being hot is a thing.