The best T-shirt bras are the ones that you can’t even detect. A staple part of your lingerie collection, they’re the ultimate element of any everyday outfit. Designed to bring comfort, support and a seamless look, the right one will see you through every season and personal style journey.

For most, bra shopping can be both daunting and tedious. Kind of like when you’re looking for the perfect pair of jeans, it can sometimes take multiple brands, styles and fits for you to find the perfect one.

Meet the expert: Suzanne Pentland, Fit Specialist at Wacoal.

“When choosing the right T-Shirt Bra, firstly, you must ensure you are wearing the correct size,” says Suzanne. Much like all your other bras, then. “The band should be fitting firmly straight across your back, sitting against your chest bone, and the wires should be sitting behind your breast tissue with all the tissue enclosed with no spillage.”

What is the point of a T-shirt bra?

To create a smooth foundation underneath form-fitting tops (typically white T-shirts and tank tops), they’re essential. They create “a beautifully round profile that appears seamless under clothing,” Suzanne says. And if you’re usually one for lace, don’t fear; Suzanne says recommends you simply “opt for flat lace fabric cups, because they sit flush against your breasts for minimal seam show through.”

How we chose/tested the best T-shirt bras in this round-up:

Instead of putting yourself through hours of trial and error, we tested and reviewed the best T-shirt bras from our favourite lingerie brands and combed through customer testimonials to back it all up. From classic styles with convertible racerback straps to newer designs featuring spacer cups, these t-shirt bras will elevate your everyday wardrobe and make you look and feel your best, even underneath your most form-fitting tee.

(PS: If you’re on the hunt for a strapless bra or stick on bras that’ll stay put, bras for big boobs, and bras for small boobs — we’ve got you covered there, too).

For more from Freelance Writer Ria Wolstenholme, follow her on Instagram.

A version of this article originally appeared on GLAMOUR US.