Kirsten needs to be cozy and warm, especially if she's going to go get herself stuck in snowstorms!
The top is very long, going to just above her knees. It's soft and crisp white. There is some plain loopy trim going around the arms and neck.
The top closes with a little button in the back, instead of the usual velcro. This is a nice touch.
The slit in the back is long enough that there's not too much problem getting it onto the doll.
The set comes with socks that are exactly the same thickness, feel, and design as her summer socks, except that these are black/gray. Maybe that keeps her warmer? I would think the socks that come with her meet outfit would be more substantial for winter weather. Maybe they're meant to go under a heavier pair of socks.
The skirt is also soft and crisp white. It has a bulky elastic waist that just slides up over the top. I love underwear sets, but as usual, it makes any over-clothes fit quite a bit more tightly. When she's in her full winter gear, the poor thing can hardly move... but that's typical of real-life, too isn't it?
The bottom of the skirt is quilted. It's not any thicker, but it does provide a little interesting detail to an otherwise very plain set.
I give the underwear set a B-. It's not really necessary-- it doesn't make her Winter outfit look any different (except for a tighter fit) and it obviously can't be seen when she's wearing it under other things. New socks are nice, but kind of impractical-- they do match her Winter outfit and sweater colors, though. It's pretty plain, but I'm sure that's true to what Kirsten would have worn.
Love my Kirsten, Felicity, Kit, Cécile, and Marie-Grace!