When am I able to get veneers after my Invisalign treatment?

I'm confused with how my treatment is planned because I'm finished with invisalign and I'm on my way to getting retainers; the retainers are paid as I type this message. Of course, I asked questions about the veneers with my dental provider, but they have me planned for wearing retainers. I know for a fact that I'm a candidate for veneers and would get them for a better smile. However, I feel like it doesn't make sense to get retainers first then veneers. Help!