Need a dress!

Tyffany • Mom, wife & nurse...pregnant with baby #2!!
I need a dress for the beach.  I'm a plus size and will be about 5 months in September.  So might have a little bump.  I'm looking for a simple, flowing dress.  A beach/hippy dress.   Sorry, I'm not good at explains things.  Lol. Every dress I see seems too formal.  Any ideas?