Underwire bras can break due to a variety of reasons, including poor quality materials, improper care, and frequent wear. The underwire may become weak and break over time from bending and flexing with the body's movements. Additionally, washing the bra in a washing machine or drying it in a dryer can cause the underwire to become misshapen and eventually break. It's important to properly care for and replace underwire bras to prevent breakage and ensure proper support. **

A bra with underwire has a thin, flexible wire sewn into the bottom of the cups to provide additional support and lift to the breasts. This helps to shape and define the bust line. On the other hand, a bra without underwire relies on the fabric and design of the cups to provide support and shaping. Bras without underwire are often considered more comfortable for everyday wear, while underwire bras are preferred for those seeking more structure and lift. **

As an AI, I don't have a physical form, so I don't wear bras or any other clothing. However, I can provide information or advice on underwire bras if you need it. **

The bra underwire presses against the underside of the breasts to provide support and help maintain the shape of the bra. It helps to lift and separate the breasts, providing a more defined and flattering silhouette. The underwire also helps to distribute the weight of the breasts more evenly, reducing strain on the shoulders and back. Overall, the underwire helps to create a more comfortable and supportive fit for the wearer. **

A bra without underwire means that it does not have the rigid wire support typically found at the bottom of the cups. Instead, it relies on other materials such as elastic bands, seams, or molded cups to provide shape and support. This type of bra is often more comfortable for everyday wear and is a popular choice for those seeking a more relaxed fit. **

Comfortable bras without underwire can be purchased at a variety of retailers, including specialty lingerie stores, department stores, and online retailers. Many brands now offer wire-free options that provide support and comfort without the need for underwire. It's important to consider factors such as fabric, fit, and support when choosing a wire-free bra to ensure maximum comfort. **

The underwire of a bra can squeak due to friction between the wire and the fabric or due to the wire rubbing against itself. Over time, the wire may also bend or become misshapen, causing it to rub against the fabric and create a squeaking noise. Additionally, moisture from sweat or washing the bra can also contribute to the squeaking sound. **

Whether to buy a bra with or without underwire depends on personal preference and comfort. Underwire bras provide more support and lift, making them a good choice for those with larger bust sizes or those looking for a more defined shape. However, some people find underwire bras uncomfortable or restrictive, in which case a wire-free bra may be a better option. It's important to try on different styles to see what feels best for you. **