When is it most appropriate to wear nipple covers?

In your opinion, when should adhesive nipple covers be used as an alternative to strapless bras?

Obviously in backless dress situations, but I’m curious as if you see day-to day casual wearing okay, or only on formal dress events, do tell!

An additive, I am a 36C cup, is it OK for me to wear them in a backless evening gown for prom? or should I go with the adhesive bra?

whenever u are in stripper mode