When did your belly button pop out?

I'm just curious at what point this happened for other ladies or if for some of you it never did. I am weird but I really want mine to poke out, I think it's such a cute part of pregnancy! I'm 22 weeks and it is getting more shallow but it started out pretty deep so it has a ways to go! Feel free to share belly button photos if you want :) :) lol (sounds so weird to say that!!)