Room, not slack
A relaxed piece is cut with extra room on purpose, so it hangs in clean lines and moves with you. A piece that is simply too big has the same room in the wrong places: it folds, bunches and pulls the eye to where it does not fit.
Shoulders
The shoulder seam sets the tone. On a regular cut it sits on the edge of the shoulder; on a relaxed or dropped-shoulder cut it can fall a few centimetres down the arm, and the sleeve is designed for that. If the seam lands near the elbow, or the sleeve has to be pushed up to show your hands, the piece is a size or two too big.
Chest and body
Fabric should fall straight from the chest without clinging or ballooning. A useful test: pinch the cloth at the side of the chest. A few centimetres either side is relaxed; a handful is too much. Heavier cloth (a thick sweatshirt, a wool overshirt) carries extra room better than thin jersey, which can look shapeless.
Length
Relaxed pieces are often shorter in the body to keep the proportions right. A wide T-shirt or shirt worn untucked looks best ending around the hip bone, covering the waistband with a little to spare. Longer than mid-seat and the legs look short.
Trousers
- A higher rise lets a wider leg hang from the waist rather than the hips, which is what makes it look intended.
- Pleats add room at the thigh and help a wide leg fall cleanly.
- Let the hem sit on the shoe with a soft break, or crop it just above the ankle. A wide leg dragging on the ground is the most common giveaway.
Balance the outfit
Relaxed on relaxed works when one piece is the clear volume and the other follows it: a boxy shirt over a straight trouser, or a slim knit over a wide pleated pair. When everything is big, nothing has a shape. Shoes with some weight, a chunkier trainer or a derby, keep the whole thing anchored.