The OG denim brand, Levi’s, created its 501 jeans on May 20, 1873 —with a button-fly closure. Zippers as we know them weren’t put into production until 1912 and weren’t officially sewn ...

It's not just an inane question born of bladder rage. Just a decade ago, aside from a few button fly bastions like Levi's 501 jeans, the zipper reigned as the longstanding king of denim.

So when I found out that I would be able to give Old Navy's Extra High-Waisted Button-Fly Curvy Sky-Hi Straight Jeans for Women ($50) a try, I was curious to see if these jeans would actually hug ...

The Old Navy Extra High-Waisted Button-Fly Kicker Boot-Cut Side-Slit Jeans come in sizes 00-30, along with tall and petite sizing options. They come in one color, a medium-wash blue.

If you're not a fan of the exposed button-fly jeans, this pair offers the same flattering high-rise shape without the fully exposed front button. They have also got plenty of five-star reviews ...

The fly is "nearly identical, if not technically identical, to Levis of today, inclusive of the exact style, shape and size of the buttons themselves", auction officials said.