When I was 16, I made the grave mistake of falling asleep at the beach with my hand on my chest. The hand print of the summer of '04 opened my eyes to the importance of diligent sunscreen reapplication, as well as potential tan-line mishaps.

Mara Hoffman Resort 2011 (2) | Mara Hoffman fishnet monokini (Courtesy Photos)

New York fashion designer Mara Hoffmann's monokinis look fabulous on the runway, but florescent lights have a significantly different impact from UV rays. Checkerboard stomach, anyone?

Free People "Bianca" monokini | L Space "One Love" | Thayer Beach Halter

Harking back to J-Lo's famous Versace Oscar dress, these plunging neckline suits are sexy by day, but when the suit comes off...

Guess "Chain Gang" cut out | Zimmermann "Whisper" underwire | Luli Fama (Courtesy photos)

So please, go monokini-crazy, but don't forget to lather up!

Meanwhile, we tested the cut-out swimsuit trend last summer, you won't believe some of the reactions we received!