How will my retainer work if I’m going to fix my chipped teeth after braces? (Photo)

I have two chipped front teeth I don’t like it. It’s not too bad. They use to be round now they are distorted a little from chewing on hard things. I am going to get braces on in a few days. Once I get them off and I go get them bonded will I have to get a whole new retainer or can they reshape the retainer to fit it as a dentist? Or is there a way the orthodontist can work with that? How does this work at all?