These are adorable, but the L is massive. I bought a L but will be exchanging for a M and even contemplated a S. I was also surprised to find that this jumpsuit came in a light corduroy material, perhaps a little too heavy for summer months.
Note that there is a similar jumpsuit on this site named Backless Square Neck Wide Leg Overalls (same words, different order). These run smaller and are made of a lighter material than this jumpsuit. I bought those in M and will need to size up.
I finally took the plunge and bought a pair of overalls and I am so glad that I did. This is probably my new favorite item of clothing that I own. I am a little bit on the taller side and have very long legs, so the pants were just the tiniest bit too short on me, but they look to be the same length as they are on the model. There is also quite a big gap around the back portion of the pants to where someone could stand behind you and see down the pants, but if you just wear black spandex, no one would ever know, but I still may get them tailored just for convenience sake. TLDR; you need these overalls.
Super cute and nice fabric similar to corduroy. I will get it slightly altered at the waist. I love love love this jumpsuit.