I'm going to confront my wife about her selling nudes.
What are you going to ask her?
How long she has been doing it for?
I understand why your wife selling nudes would upset you, but you shouldn't try to stop someone from living how they want to. If you're upset about her selling them, you should have a calm discussion with her and explain your perspective.
She's cheating on me and I'm not just letting her get away with it.
Most wouldn't consider selling nudes to be cheating, but I can see why that might bother you. She has a right to do what she wants, however she also should tell the truth.