Can anyone recommend a comfortable strapless bra for use under sleeveless tops and dresses? My strapless bras, which are the same size as my other bras, dig into my chest and actually leave red marks when I take them off at night. Not fun.

Most of my "regular" bras are NOT underwire; my strapless bras ARE underwire. Is underwire necessary in a strapless for it to do its job, given the absence of straps? I must confess I don't know. And I'm wondering if the underwire contributes to the discomfort.

I'd love to find kinder, gentler strapless bras...thanks!