I'll admit that I enjoy the wearing the cowboy clothes as much as shooting the guns,but some folks don't. A pair of jeans,long sleeve button front shirt,Wellington or roper boots($30 at Walmart) and a cheap cowboy hat or kepi will be sufficient at any SASS shoot. We don't insist on correct clothes down to thread color and button type,just enough so you look
like a range hand. At my club,first timers are welcome to shoot wearing just about anything they want.