I checked the reviews before ordering these dungarees and decided to size down one size. A great decision! They are still a little oversized, especially in the belly region (I have thicker thighs than belly, so I would not size down another size since the fit might be too tight there then). Personally, I like the look and I've gotten lots of compliments for them already.
I also don't think the chest part is very small, as some reviews stated - to me it is just right!
To me, the reason I took one star off the review is that the stitching is not as neat as I am used to from all of my other Lucy & Yak pieces. Inspecting the dungarees closer, I noticed that there are some threads that weren't cut off properly at the end and some of the stitching is a little wonky. Luckily, no loose seams and nothing is visible from afar. But it's not the absolutely amazing quality I am used to from this brand.
Over all, I would recommend these dungarees. They're beautiful, lovely material and I am very happy with the fit on myself, oversized as it is. But absolutely do size down at least one size, if not two.