I made a rule when first taking my now wife as my submissive, to never wear panties or a bra when with me or especially when I send her on a date with other gyys. As if it wasn't already, the guys do very much enjoy this very clear showing of her intentions and wants. Although she was at first somewhat resistant, Naomi came to enjoy it as very much a turn-on in feeling even more like the slut.
That's part of our dynamic.
As part of her commitment to being a good slut my doesn't wear a bra anymore, unless it is something like this