Okay, now I’m going to apologise for my first suggestion as it fits your requirements for everyday (though maybe not especially sexy) exactly and bra wise is 100% my favourite for everyday under both work clothes and relaxing at home clothes (I have 8 sets in UK 12-14, two currently unopened for when the others start to give up but so far they are still perfect and though the colour on the green (a lot) and blue (a little) has faded the elasticity, support, comfort and softness remains perfect). They are no longer stocked - hence my apology but I’m hoping mentioning it regularly might encourage LH to bring them back.
Anyway, these bra sets, which I can’t find anything else similar to on LH now.
Having said that the body, which I don’t own should he similar and is still currently stocked and is on 80% off sale (£6!!!) as going to be discontinued so might well be worth a punt while they still have it?