Over it all
Overalls seem to be making a comeback, and personally I quite enjoy the look of overall shorts-- like a cool update on the previous romper trend! Though I wasn't as into rompers, overalls are really striking the right notes for me, especially in their ability to show just enough skin during the summer heat, as well as the durability and look of denim. I recently thrifted a pair of overalls, though not made of denim, it was still the perfect light material for summer. As with most thrifted items, some simple adjustments had to be made.
As you can see, the overalls were pretty loose fitting and baggy, which is not too bad except it wasn't exactly how I wanted them. To make the overalls a bit more form fitting and flattering around the waist (and shorter!), I added a simple buttonhole to cinch up the waist.
Draw a line where the buttonhole should be, and cut it out. I used an x-acto knife for this. Check and make sure the button will fit through. Then sew all around the slit, basically like a rectangle, to ensure the slit doesn't get bigger over time from use.
I folded the cloth over so the button went through both buttonholes. The end result should look like this on both sides.
Tada! Shortened and cinched, and much more summer and romper-like than before. If you want it to look less like a train conductor outfit, I would also suggest removing the front pocket and buckles, and turning the buckles into buttonhole closures.