I have wanted to add comfortable, stylish and structured shirts to my work uniform and these shirts are the best! I am usually a size M with somewhat broad shoulders and 34DD bra size, The size Small fits just the way I wanted it to; slightly oversized. The XS may fit (I didn't feel like ordering multiple sizes to try on). I am happy with the Small. I wear these shirts tucked into high-waisted pants or jeans, un-tucked, half tucked, open, sleeves normal, sleeves rolled up, and my favourite: knotted in the front! There are many ways to style these shirts! The fabric is thick enough that I do not need to wear an undershirt, and there is no gap where the front buttons up. The thick brushed Cotton fabric is very resistant to wrinkles and ultra cozy. I have worn this shirt several times without washing or ironing and it still looks fresh. The weight of this fabric will make it suitable to wear in my office and at home in the Fall, Winter and Spring. It would also work as a light cover up for a cool summer night. I live in Langley, BC and it only took 1 day to arrive in my condo mailbox. I also love that there is minimal packaging - I am happy to support small local companies that source quality fabrics sustainably, and have ethical factories.