A revolutionary discovery is rewriting the history of underwear: Some 600 years ago, women wore bras.

The University of Innsbruck said Wednesday that archeologists found four linen bras dating from the Middle Ages in an Austrian castle. Fashion experts describe the find as surprising because the bra had commonly been thought to be only little more than 100 years old as women abandoned the tight corset.

Instead, it appears the bra came first, followed by the corset, followed by the reinvented bra.

One specimen in particular "looks exactly like a (modern) brassiere," says Hilary Davidson, fashion curator for the London Museum. "These are amazing finds."

Although the linen garments were unearthed in 2008, they did not make news until now says Beatrix Nutz, the archaeologist responsible for the discovery....