gm suit ?

Where are people getting their gm suits from? I am not doing tuxes but now I am a little stumped. FH wants khaki suits or khaki pants with navy blazers and I am thinking navy suits. Any suggestions? It is an afternoon wedding outdoors ceremony on the beach so I am trying not to go too formal.

Thank you!

i LOVE that look- try and do a search online for 'khaki suits' or beach attire for men + suits
you'll find websites for it.
Or what about Syms or Mens Warehouse or Banana