>>2520736I've gotten four girls to do this including my current wife who wears from time to time.
You likely have a 2/3 chance to get a vanilla woman to wear a diaper for you. Yes, really.
It's probably easier if they are already kinky, but they don't have to be.
Basically, she has to respect you, see some kind of potential in you, be pleasured by you sexually AND feel sexually desired by you. When you feel confident that you are progressing with her on these things, just talk to her about this fetish candidly one day, explain why you like it and answer her questions about it. Don't be weird, just speak honestly. Bonus points if you talk to her about how she can enjoy it to (her becoming more sexually irresistible, what you would do to her, things to try, etc). You'll either get a "Yes", "No" or "Maybe". In my experience, "Maybe" is just a delayed "Yes". Give few more weeks / months as they feel more comfortable, but it'll happen.
Like
>>2520804 said, actually take care of yourself, your appearance, and be a respectable person trying to work towards something in your life. If you do these things, you will have a 2/3 chance of getting her in a diaper. I'm not a chad btw.