baby shower & maternity dresses HELPPP!

Tee • Baby BOY 👶🏼
I'm having my baby shower and maternity shoot a week apart. But can't see to find a nice classy dress. For my maternity shoot It's going to be by the water so I'd like something flowy I've look at places online but would rather do find something at a store so ik exactly how it fits but I need help.::: any suggestions?? Immnot looking to spend an outrageous amount but would like something very classy any ideas mommies???? Websites or store would be nice. This is me now.. and I'm 29 weeks. I'd like a dress like the first picture..