No problem. I've been thinking about it for some time.
I'm not positive how things were conducted at Avoyelles in 2008, but at least now, visitors are forbidden from wearing white t-shirts and jeans, lest they be confused with inmates. The person of interest in the Jessica Hawk case was wearing jeans and a white shirt with a shorter-sleeved black shirt over the white.
http://doc.la.gov/pages/correctional-facilities/avoyelles-correctional-center/
I know that very, very few men would be so fashion-forward as to wear jeans and a white t-shirt (ha), but again- I'm adding it to my pile of information that will likely amount to nothing.
The only thing that ever stood out to me about the description of that clothing was that anyone would wear two shirts on an August day in New Orleans. It was about 90 degrees here on August 9, 2008.