X-ray foot heel shoe

No pain, no (height) gain? Photo: Bryan Whitney, Getty Images

Break out the bubbly! Scientists have finally cracked the "Case of High Heel Misery," the Telegraph reports.

Researchers from England's Manchester Metropolitan University claim to have discovered why some women are able to wear sky-high heels all day, yet feel pain when they take them off, according to the paper.

It turns out that, researchers say, our heels shorten the fibers in our calf muscles, making our Achilles tendon shorter and thicker.

However, we reportedly don't feel the effects while we're strutting around because our heels are elevated. But when we ditch the shoes, our muscles are overstretched and in pain.

Scientists -- who will have their findings published in the Journal of Experimental Biology -- came to this conclusion after comparing women who did not wear heels with those who lived in 5cm heels, the Telegraph reports.

Ultrasound technology reportedly found that (surprise, surprise!) the calf muscle fibers of heel-wearers were 13 percent shorter than those who preferred flats.

But don't go tossing your Loubutins in the garbage just yet. A few simple stretching exercises can help heel addicts avoid foot pain.

"If you stand on your tip toes and lower your heels up and down again it will stretch out the tendons, making it easier to walk without heels," Pro. Marco Narici told the paper.

"If you do this about 20 times a day it should be sufficient to prevent this happening."

Got it, Suri?

Meanwhile, check out Beyoncé's towering Lucite platforms.