Thank you @DomBull4U for bringing the thread back on track.
I do agree with you that the terminology "domme" relates more to bdsm than to cuckoldry. However, I also think that a hotwife must feel empowered over her man by the fact that she can sleep around while he can't. And let me state my point clearly here: everybody can do whatever they want and whatever gets them off, but - in my humble opinion - a couple where BOTH have parterns outside the marriage/engagement is NOT living a cuckold lifestyle but "simply" an open marriage/relationship. I have come across people that are not in agreement with me on this...and they sure have valid arguments. I still stand my ground, in any case. So, coming back to the topic at hand here, there is a sort of "femdom" inside the very conccept of cuckoldry, in my opinion. That's probably why I would and could never take on the role of the man who lets her woman sleep with others: I'm too dominant to accept it.
As for the t-shirt... I've seen some similar in my country (I don't live in the USA). I disagree with that statement. Sure, if a man wants THAT pussy, the woman has almost illimited power. However:
1) if she's a woman bald enough to wear such a t-shirt, she wants a dick in that pussy just as much as the cock wants to be in her cunt; hence, the power is even.
2) if the man is simply looking for A pussy, not that specific one, the girl has no real power; sure, she can look for a different cock herself, but - once again - the power distrubition is even.