A push-up bra is a type of women's undergarment designed to enhance the appearance of the bust. It features padded cups that lift and support the breasts, creating a fuller and more pronounced cleavage. This style is popular for wearing under various outfits, especially those with low-cut necklines. The padding in a push-up bra can vary in thickness and is often made from materials like foam or gel. Many brands offer different styles, including underwire and wireless options, allowing women to choose based on comfort and desired effect. Popular brands include Victoria's Secret and Calvin Klein.