How to choose your tank top size?

The guide to never make a mistake again

The tank top is an essential piece: discreet under a shirt, yet striking on its own, it hugs the body and moves with you. But for it to fully play its role—comfort, support, style—you still need to choose the right size. Too tight, it's uncomfortable; too loose, it floats and loses all its charm. Here are some simple tips for finding the tank top that fits like a second skin.

1. Take your measurements (the real ones)

Before you rush into an S or L out of habit, grab a tape measure and measure:

  • Chest circumference (at widest point)

  • Length (from top of shoulder to bottom of back)

These measurements will serve as reliable benchmarks, much more so than the label of a garment worn three years ago.

2. Consult the size guide… of the brand in question

Each brand has its own cut and sizing. At Les Tricots Marcel, for example, our tank tops are designed to follow the contours of the body without restricting it. Our size M may not correspond to that of another, more industrial brand. Hence the importance of checking the specific size guide, based on precise measurements.

tank top size guide

Length of our Marcel: XS: 63cm S: 65.5cm M: 68cm L: 70.5cm XL: 73cm

3. Think about the use: underneath or alone?

  • Worn as underwear ? Opt for a fitted, close-fitting cut to keep the undershirt invisible and comfortable.

  • Worn alone ? You can choose a slightly larger size if you prefer a more casual look, or stick with fitted for a bold style.

4. Observe the material

A Pima cotton tank top like the ones we offer will have natural elasticity without added elastane. It will therefore fit your body shape delicately, without a "second-skin" effect.

But be careful: some fabrics can shrink slightly after washing. If you're unsure between two sizes, ask for advice or choose the most comfortable fit when trying it on.

💡 Thanks to the quality of Pima cotton, our Marcels retain their fit perfectly, even after several washes.

5. The ultimate little test: the mirror and feeling

Put on the tank top, move, raise your arms, sit down. It follows your movements. In front of the mirror, you should feel comfortable and good about yourself—literally.

💡 Because the perfect fit makes all the difference, we offer a free exchange with your first order, if the size does not suit you.

Choosing your tank top size is a matter of accuracy. It's not just about numbers, but about sensations, posture, confidence. Because a good undershirt is one we forget about because it suits us so well... Until it becomes a style signature.


Return to Marcel's Blog