Any and everywhere . In shops or on line Google it
No one judges you. Might be buying for self might be buying gf wife who knows who cares
I do find it funny near xmas men walking round bras nixs etc trying work out what buy
A lot of my friends get stuff off of ebay. Primark can be good. To be honest, when I've bought stuff in public, no one has given a shit. It's the same when I've been in Boots and had them colour match me, or at Specsavers to buy feminine glasses.