Thanks all for weighing in!You echoed my thoughts. Since DS is growing so fast I too feel like a suit would be worn only once before we go shopping again.
Thanks for the links to the button downs. I hadn't considered target/Walmart and will check them out now.
I looked at some old pics. The kids are in suits, button downs and polo shirts. DS is leaning towards polo shirts and shorts as its going to be a hot day.