From the ‘Only in America’ (and please let it stay there…) file:

Arousing undergarments such as thong underwear and bust-enhancing “water brassieres” won’t be allowed into state prisons after Aug. 1, when a newly revised set of visitation rules takes effect.

Prisoners “don’t need any help getting turned on” or out of hand, said Correction Commissioner George Little of the underwear regulations.

The dress code revisions, which also prohibit steel-toed boots and tattered clothing, are part of an effort to tighten a range of visitor policies and make sure they’re consistent across the state, Little said.
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- Source: Prison visitors face new ban on revealing lingerie, The Tennessean, July 26, 2007