Style Guide · Styling
A good base layer is invisible. Everything about choosing one follows from that.
Bulk in a layered outfit almost always comes from the bottom layer, not the top. A thick ribbed tank under a fitted blazer creates ridges at the shoulder and a roll at the waist seam. A thin modal or rayon cami disappears. If you can pinch the fabric and it springs back thick, it is an outer layer pretending to be a base one.
Wide straps cover a bra strap and sit flat under a knit. Spaghetti straps look better with a shrug or an open shirt but slide under anything with weight. Racerback straps solve the visible-strap problem and create a new one, because they only work with a racerback bra. Pick the strap for what goes over it, not for how it looks on the hanger.
A base layer should end at or below the waistband of whatever you are wearing, always. A cami that stops an inch short leaves a gap that shows every time you reach, and it makes the outer layer look too short as well. Longer camis tuck cleanly and stay tucked.
Base layers earn their keep in three colors: your skin tone, black, and white. Everything else is a styling decision rather than a layering one, and it limits what can go on top. Buy the neutrals first and the interesting ones after.
Two stretchy knits stacked on each other cling to each other and to you. A woven over a knit slides. A cotton base under a rayon top drags the rayon into wrinkles by lunchtime. If a layered outfit keeps bunching in the same place, the fix is almost always swapping the base to something thinner and smoother rather than sizing anything up.
The pieces this guide keeps pointing at, from the XIEERDUO range.