Magnets have long been used as snap closures on clothes. However, magnets still attract even when separated. So, for those who like to show a bit of skin and want to go beyond mere slit skirts or ripped t-shirts, I propose the ultimate in almost-nothing-wear: clothes held together by magnets that do
not touch. Clearly, the separate pieces of fabric would have to be *very* tight-fitting, or any minor movement would let the magnets snap together.

If you're having trouble picturing this, please see the illustration. (po very kindly agreed to model this idea, on the condition that her features be blurred out - you never know where photos posted in the Internet will end up! This is intended as a unisex idea - if any of our male contributors would like to pose, please let me know.)

Magnetic force varies as the inverse
FOURTH power between the magnets.
So, suppose things are arranged to give
a holding-force of 100 grams when the
gap is 1cm. If Po breathes in (which she
presumably would want to, probably
regularly) and stretches the gap open to
(say) 1.5cm then the force will drop by a
factor of 1.5^4 or about 5-fold, leaving
only 20 grams of force to preserve her
dignity. Conversely, if she breathes out
(also a good idea, especially after
breathing in) and the gap closes to
0.5cm, then the force will increase by
2^4 or 16-fold, squishing poor Po with
a force of 1.6kg.
Also, if you had magnetic swimsuit
closures you'd tend to stick to ships or
wind up at the north pole.

I've done this kind of thing. It's fun to give the magnet a slight tug and feel it snap back into place. Take care not to have the sets of magnets too close to each other, or they will all cluster together.

Based on [Basepairs] observation, it plainly makes sense to use ultralarge magnets with the largest possible gap they can support, since this makes the distance change by the smallest possible ratio. Of course it also makes the person stick to passing cars, and each other, but, you know, details.