In my humble opinion

Women look attractive in full winter garb, in regular clothes, in swimsuits, in lingerie, naked or any other scenario. Women are attractive regardless.

Men look more attractive in a tailored suit than naked

*then :)

Science Time! (mostly applies to Western societies) A study by Kurt Gray showed how the mind perceives flesh as 'experience'. So, to try and summarise the experiment, the brain perceives a person in clothing as more of a mind, their own person. However, when in minimal to no clothing, the brain perceives that person as an experience. Lingerie entices the mind as rather than being completely naked, which usually shows the objective of "let's have sex", lingerie shows the anticipation towards this act making it more exciting.

That's the whole point of lingerie you fucking mcnugget

Depends on the girl.