Quote Originally Posted by RobertParker View Post
Just wear whatever you would normally wear for casual wear. I like the safari shirts too, and t-shirts. But I wear them with jeans and stuff, too. Just make sure the color of your shirt works with the kilt.
This is the exact approach I take... I try to find a shirt color that works with my Tartan and I base my choice on the occasion. I'll put on a button down for more formal events and a good-old T-shirt when I'm feeling lazy or just feel like going casual.

I've sported long sleeve black jerseys and Black T's with my Great Kilt too. Then at other times I've gone full-on time period.