Barb is right. If possible, have her sitting and turned at a 45 degree angle or so, and him standing behind her. Also, you might want to shoot dramatic lighting, using shadows in your favor. It's amazing what you can do with LESS light or properly placed shadows on heavier people. Another option is bride and groom sitting on the grass, maybe resting on their elbows looking at each other. You don't have to get their entire bodies, keep that in mind. You could just get the close-up on the grass. There are a lot of things like that you could try. For ideas you might want to try www.zuga.net.
There are some top-notch wedding photographers there. Best wishes. Been there, done that! [img]/ubbthreads/images/graemlins/smile.gif[/img]