only study saying formal clothing less attractive, but it's the latest of them

[Ryouichi]

https://www.semanticscholar.org/paper/Formality-of-male-clothing-influences-ratings-in-Kubicov%C3%A1-%C5%A0t%C4%9Brbov%C3%A1/d5b014c18693aeaa2190e70e785dad5a4bb3335f?utm_source=consensus

they were dressed in black suit with a white shirt, while in the control condition participants were dressed in a white t-shirt and dark jeans.

. An independent set of 44 heterosexual men (mean age 22.11, SD=2.49) and 38 women (mean age 20.71, SD=1.53) rated randomized videos of the target men for attractiveness, submissiveness-dominance, and self-esteem on 7-point verbally anchored scales.

women rated target men in casual clothes as significantly more attractive than in formal clothes (p=.002).

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There's also this from 2006: https://www.esquire.com/style/mens-fashion/a1434/esq0306guide-111-2/
Also a shift towards casual clothing.

But studies done earlier show that women like high status and formal clothes. Confusing.