Overalls are definitely a statement wardrobe item. It's a fine line to walk: the difference between being mistaken for a construction worker (possibly a farmer) and being très chic. I think overalls are a on-point update of the classic blue jean, and therefore totally acceptable.
They come in the form of pants, skirts, and shorts as well as a wide variety of fabrics including denim, corduroy, leather, and linen. (Silk too, but those border on pajamas...)
Dress them up for a night out with a jeweled collar and blazer, or keep them casual with a classic Marinière top and some cool shades.
So...would you wear them?