An oversized tee is a volume

Same shirt, same person, two photographs. On the left it's untucked over wide trousers; on the right it's tucked into straight ones. Those are two different outfits and neither is a compromise.

An oversized tee doesn't have a "correct" way to be worn. It has a volume, and everything else is a response to it.

What are the two options?

Match it or oppose it.

Match the volume. Wide trousers, untucked, hem hitting mid-hip. The whole silhouette becomes one relaxed shape, and the shirt reads as intentional because everything agrees with it. This is the version the cut was designed for.

Oppose it. Tuck it, or half-tuck it, into something straight or tapered. Now the shirt's width is the top half of a deliberate contrast, and the outfit reads sharper — closer to tailoring than to streetwear.

Both work. What doesn't is the third thing that happens by default: an oversized tee untucked over slim jeans, which reads as a shirt that's too big rather than a shirt that's oversized.

Why does the untucked-over-slim version look wrong?

Because it's the shape you get when a normal shirt doesn't fit.

The eye has seen that silhouette a thousand times as an accident — a borrowed shirt, a shirt bought too large, a shirt that shrank the wrong way. Wide on top and narrow below reads as a mismatch unless something else in the outfit signals that it was chosen.

The fix is small: change the trouser, or tuck. Both take the same silhouette from accidental to composed.

Where should the hem sit?

Around the hip bone. That's the whole rule.

A boxy tee is cut to end there, and at your normal size that's where it lands. Longer than that and it starts reading as a tunic — a different garment and a deliberate one. If length is the thing you care about, the chart's length column answers it directly rather than by inference.

This is the most common reason to end up with the wrong shape: sizing up to get more width also adds length, and the width was already in the pattern.

Does the half-tuck actually do anything?

Yes, and it's not just an internet affectation.

Tucking the front third breaks the shirt's straight hem line, which shows where the waist is without losing the volume in the body. It's the compromise between the two approaches above and it's the one most people end up using daily, because it keeps the relaxed shape while giving the outfit a middle.

Practically: one hand's width of fabric tucked at the centre front, nothing at the sides or back.

What about layering?

The weight is what decides this.

A heavyweight knit is substantial enough to be the outer layer in mild weather, which is unusual for a t-shirt and one of the practical arguments for heavy cotton. Under an unstructured jacket or an overshirt it works; under anything closely fitted it doesn't, because the drop shoulder and the width bunch at the arm.

An open shirt or a chore coat over the top is the natural pairing — both are cut with room, so nothing fights.

Does the print change how it should be worn?

Only in one way: a large chest print wants to be seen.

A full-width design tucked in and layered under a jacket is mostly hidden, which is fine if that's the intent and a waste if it isn't. A small mark survives everything — which is part of why small prints get worn more.

If the design is the reason for the shirt, the untucked matched-volume version is the one that shows it.

Does this work for the tank?

Same logic, more exposed.

A sleeveless cut has less volume to balance, so it reads naturally with wide trousers or shorts without any of the above being a decision. Tucked, it becomes considerably more formal-adjacent than people expect.

The shared principle across both: decide whether the outfit is agreeing with the garment's shape or arguing with it, and commit either way.

How do I order?

Pick the design at JustOG, choose the garment, size and colour, and see it composited on the real thing before ordering. It's made to order and shipped.

Designs other people have published are in the shop.

The shirt isn't the outfit. The trousers decide whether it looks chosen.