From Live Fighter 2008...this was very unexpected as the concert coverage I'd read previously did not mention one word of it.

Sure uniforms look cool, but the groups/organizations connotations can link you to should be taken into consideration as well. If she was wearing the SJAB uniform, ikka would probably shed tears, both out of joy and pity for her having to sweat buckets in it.

Would recommend reading the comments, they're much more insightful that I can manage.