This is a thin, white knit sweater. The wide neckline allows for a glimpse of the décolletage, showing off the collarbone and creating a clean neckline, which enhances femininity. *It doesn't give the impression of being overly revealing. It's soft and stretchy, and although it's slim-fitting, it's comfortable without feeling tight. There are pearl buttons on the back, which can be buttoned and unbuttoned, but you can also take it off without unbuttoning them. Think of them as stylish decorations. Because it's thin and white, you'll need to wear something underneath, like a camisole or a long-sleeved Heattech shirt, or your underwear might show through.