Under the coat to stay warm walking my dog in -22 degrees Lululemon leggings - size 2. These have a LOT of compression - I was worried they wouldn’t even go on but once they’re on they fit really well and they haven’t rolled down at all. Polar fleece is size XS. It’s a perfect oversized fit This tshirt is a size XS and I’ve been reaching for it a ton. It has a great neckline for layering LTKcanada LTKwinter