Every year there is that one shoe that has just been popping up everywhere. This year, that shoe is the mule. The mule is sort of a slip-on sandal with a heel and a wide band at the front. Fashion magazines like Elle and Glamour have been talking about this shoe.

Fashion gurus like Gigi Hadid and Selena Gomez have been rocking this style all year. So I'm here to tell you everything you need to know about mules and why you should invest in a. There are three types of mules: the block heel, flats, and stilettos. The block heel can come in many different heel heights all the way from one inch to four.

1. Sam Edelman Yumi Bow Mule Sandal

These are like the traditional mule sandals with block heels and a simple, yet cute, design.

2. Vince Rachelle Slide Sandal

These are great to wear with day to night outfits especially with the one or two-inch heel because it's a heel but it's not so high it will get uncomfortable as the day goes on.

3. Topshop Adele Bow Flat Mule

The next style is the flat mule. People have been wearing these like crazy all summer. Many places like Lulus and Asos have them for reasonable prices. The flat mule can come in styles where the front looks like this bow...

4. Jeffrey Campbell Varada Mule

...Or just a simple wide piece of cloth, and there is also the pointed-toe mules.

5. Daya by Zendaya Sheridan Fringe Denim Clog Mule Stiletto

The last style is the stiletto. I personally don't think I could rock the mule stiletto but I've seen many people that could. The mule stiletto is just like the block heel but with a stiletto heel.

I have yet to brave such a heel but if the shoe fits...wear it. All of the shoes in the pictures above are from the Nordstrom website. Some options are from the sale but not all.

Now, why should you invest in a pair of mules you may ask? Well, there are many answers to this question. The first answer is simplicity. This shoe is simple yet chic. It goes with everything and is easy to slip on and slip off.

You could easily go to class in a flat mule or a one-inch heel if you so desire. They match everything from an outfit with jeans and a simple tee, to a fancy dress. It all depends on the style of mule you buy. I'm the kind of person who dresses per occasion, so if I'm going shopping, I like to wear an outfit that won't annoy me to take on and off trying on many outfits from various stores.

The flat mule is perfect for shopping. You can easily slip it on and off with no hassle while trying on various shoes to your heart's desire, and if it's like my heart, that's a lot of shoes. The final reason you should invest in a mule is the cute factor.

What girl doesn't need a slip on shoe like this in their closet? Answer: none. every girl needs a shoe like this. Whether you're a working girl or a college girl or just a girl, this shoe is extremely versatile and will most likely be your go-to if you make it work. Now, I have yet to invest in a mule, but I am definitely on the lookout for the perfect pair.

Happy mule shopping!