I'm not yet 35 (but close!) so my preference might still lean a bit "young", but I love layering satin/silk bikini bras under clothing that might "show" what's underneath (like loose tops were when you lean over one might be able to see your bra etc)

I got https://www.amazon.com/Triangle-Bralette-Breathable-Non-Underwire-Champagne/dp/B07G5CTGT7/ref=sr_1_6?dchild=1&keywords=silk+bra&qid=1628645380&sr=8-6 in pink and black, I might buy another color. I have pretty small boobs but they are not pert anymore because I breastfed, and those bras are perfect for me rn. Holds things in place, comfortable, and not too big a deal if someone saw them when I lean over/bend down etc.