Shop Old Navy for one piece swimsuits for women in classic styles designed to flatter every figure. Our women's one piece swimsuits are great for the pool or the beach. The lovely palette of colors in our one piece swimsuits for women allows you to make a choice that complements your skin tone. We feature halter design women's one piece swimsuits with ties that wrap around the neck for a stunning look. One piece swimsuits for women are stylish with a timeless look that will have heads turning.