This is a very warm and loosely fit cardigan - as you can tell from my obvious baby bump! :)

The circumference while buttoned is about 42 inches.
Fits a S/M but there are directions on adjustments you can make if you’re intermediate/experienced knitters and want to make it larger. They aren’t complicated adjustments. If you have questions, feel free to message me! I want to help as much as I can or make adjustments to the pattern if there are mistakes.