Best T-Shirt Bras: 13 Options That Won’t Show Through

I’ve been wearing a version of this Calvin Klein bra for 30 years. This current iteration features memory foam cups that mold to your shape and smooth microfiber fabric for a soft feel against the skin. The cups are neither full nor demi, providing just the right amount of coverage. It’s also available in a slew of colors so you don’t have to stick with basic black or beige.

This Third Love bra is my absolute favorite. The thin memory foam cups mold to your shape, and the sides and back maintain a perfectly smooth and invisible presence under everything from t-shirts to dresses. And it’s available in ½ cup sizes which means it’s destined to be the best fitting bra in your lingerie drawer—that is, if you ever take it off. Thanks to this precise approach to cup sizes and a wide range of band sizes, this is one of the best bras for small breasts (and, honestly, one of the best bras for large breasts).

This seamless, wire free bra from Wacoal (a brand that made our list of the best strapless bras) features stretch foam cups, flexible side stays, and a clean, smooth finish at the neckline and underarms; all of which adds up to a perfect, inconspicuous t-shirt bra. It’s so comfortable, you’ll forget you even have it on. It’s also great as a sports bra as it supports without mashing you down. Wacoal is absolutely correct; it’s pretty much the perfect wireless bra.

Made from smooth microfiber fabric with lightly padded, molded cups, the Cosabella Evolution bra remains smooth under all manner of clothing. Unlike some strapless bras, the Evolution stays securely where it should be when you’re dancing or running for the train. And it comes with removable straps, making it extremely versatile as well.

The hallelujah of this bra from Spanx lies in the back made from comfortable, soft hosiery fabric and the full coverage cups that curve around your body, all adding up to a smooth silhouette beneath even the thinnest t-shirt. There’s a front closure and thin, front-adjustable straps so you can achieve the perfect fit. The underwire is light enough that it provides ample support without digging in.

The Felina Gorgeous Cushion Comfort bra features cushioned memory foam cups, a seamless design and straps that can be adjusted and worn in three different ways (traditional, racer back, and halter). Designed for large breasts, Felina bras provide shaping and support that disappears under all manner of t-shirts and other knit tops. The company’s sizing is different than most others so be sure to consult their guide before ordering.

The Soma Bodify bra features their patent pending Flexicup™ technology that stretches and molds to your unique body shape and Floataway Wire™ that moves when you do. Both of these things make it especially comfortable and supportive for large breasts. The straps sport soft spandex grippers so they stay on your shoulders and the mesh sides add breathability.

Pepper makes bras specifically for small breasts which means they do it exceptionally well. Available in AA, A and B cup sizes, each is designed to hug your body without the weird gaping that often occurs in this size range. The mesh bra is lightly lined with natural coverage and a slight lift making it both flattering and comfortable, as well as smooth under all your t-shirts.

Molded demi coverage, lightly lined cups and a bonded deep neckline make this bra from Skims invisible under all types of t-shirts. It’s also extremely comfortable and soft—one of those bras that you often forget you have on. And it’s available in a wide range of skin tone colors making it one of the most versatile options on this list.

This bralette from Commando features molded cups, a wide band and no-pill fabric. Hardware and tag free, this is one of the most comfortable bras I’ve worn which also provides enough support that I can wear it out in the world. Works especially well under tank tops in the summer.

Seamless and airy, Cosabella’s Soire bra fits like a second skin. The smooth, lightly lined cups and sheer stretch mesh mold to your body providing a supportive and invisible layer. The cups are full coverage with a plunging front line that works well for V-neck and other open neckline styles.

The Trish bra features shallow cups that mold and contour to your shape, creating a smooth silhouette without gapping or annoying bumps and a wide band for support. It's particularly well suited for those with uneven scars from breast surgery. The low plunging neckline means you can wear it underneath a variety of shirt and dress styles. The Trish Molded Cup bra is best suited for cup sizes C/D/DD. Their size guide explains how their molded cup sizes work. For A and B cup sizes, consider the Molly Bra.

The Classic T-Shirt Bra from Amazon is a simple, versatile, and durable bra that feels smooth to the touch and is smoothing in appearance. It’s a great everyday style that works well under most any garment. And, at under $20.00, it's incredibly affordable.