Here's something... They have now developed clothing (loose, comfortable, presumably fashionable...) that is infused with a type of silica. It is regular clothing, but when it is struck with force, it stiffens up like armor.

Quoting the website referenced below:
"The silica nanoparticles move around like a liquid under normal conditions, but when struck lock together in a solid lattice-like structure that lasts only as long as the impact."

Of course the military gets this kind of stuff first: tinyurl.com/k2vcq , but it has now moved in the the private sector. First seen in the olympics, worn by downhill skiers: tinyurl.com/9fvea , and now available to the masses as hats: tinyurl.com/2jdrns.

The military say "it may not stop every bullet". What?!? The fact that the stuff to stops ANY bullets blows my mind. Think about the applications! Riding your motorcycle in a long-sleeved shirt. Heck, going to the grocery store in armor. If it's as comfortable as the clothing currently in your closet, why wear anything else?