um, there's different companies that make cheerleading uniforms, for example, my school used www.cheerleading.com for our uniforms. but, you don't just get the uniform, well i mean you can, but most places get like warm-ups & stuff like this to go w/ the uniforms.
No not many kids like school uniforms. They would rather express themselves then wear uniforms. Although some are for it because there would be no teasing about how cheap or how someones clothes that they wore to school were.