It seems to be an occasional fantasy of the naughty private school girl wearing a too-short school uniform, as this music video illustrates.
But lately there has been a some heat regarding the wearing of Confederate flag images on t-shirts. Often banning these is motivated by a desire to avoid possible occasions for provocation. And I can't find much fault with this thinking. On the other hand, is there a First Amendment issue at stake also? Free speech is not limited to speech that others approve of.
But what about pro team athletic jerseys? I can imagine the desire of boys in Colorado to show their Denver Bronco partisanship by wearing a Broncho jersey; preferably #18 (Payton Manning's). And likewise Carolina guys would patriotically sport a #1 Panther jersey (Cam Newton's). But what about the Colorado nonconformist who sports a Panther jersey or the Carolina provocateur who dares to wear a Bronco jersey? Will the impact of this be a mild tweaking against social conformity; or a true social provocation? The school district in Everett, WA decided it could be the latter: it banned non-Seattle area professional sports teams from being worn on school premises. The reason: they thought it could be used as gang identifiers. After all, big, aggressive guys sport those colors most Sundays in the Fall!
Since these jerseys can be pricy (some $100 apiece or more), this can be a real factor if they are excluded from some wardrobes.
Let's look at it a bit further: what if some odd duck in those places showed up wearing a Tennessee Titans jersey in either Denver or Charlotte? Or (horrors!) a Dallas Cowboys one! Those are not conforming clothes; but other possibilities that may rise to the occasion. One reason why this might occur is because some teens like to jerk the chains of adult authority figures.