A t-shirt bra is a type of women's undergarment designed for everyday wear. It features smooth, seamless cups that provide a natural shape and a discreet look under clothing. The soft fabric and minimal embellishments make it ideal for wearing under fitted tops and t-shirts. These bras often come with adjustable straps and varying levels of padding, offering comfort and support. Many t-shirt bras are made from stretchy materials that adapt to the body's shape, ensuring a snug fit. They are popular for their versatility and ability to create a smooth silhouette.