Bikinis are two-piece swimsuits that are popular for their stylish and revealing design. They are typically worn by women and consist of a bra-like top and a bottom that covers the groin area. Bikinis are commonly used for sunbathing and swimming, offering comfort and freedom of movement. They come in various styles, colors, and patterns to suit individual preferences. Remember to consider local cultural norms and dress codes when wearing bikinis in public areas.