A swim cover-up caftan is a great way to dress up a one-piece swimsuit. A caftan is a long, flowing robe that can be worn as a cover-up or as a dress. It is a great way to add style and glamour to your swimsuit. For example, you could wear a white caftan with colorful embellishments for a beach party or summer wedding. Or, you could choose a bold print for a fun and festive look. Whatever style you choose, a caftan is a perfect way to dress up your one-piece swimsuit.