Demi Lovato doesn't play around when swimsuits (or sunglasses) are involved! The 25-year-old singer posted a sexy snap to Instagram on May 9 to promote her collection with Diff Eyewear, but I'm sorry, what's that suit I see? Her orange deep-cut halterneck swimsuit is brighter than the sun, so yes I will need a pair of shades, thank you! Add a floral pattern that pops and you have a recipe for the perfect Summer one-piece. She's no stranger to a low-cut style or a sultry halterneck suit, and we'll gladly accept all the pool-time inspiration she'll offer. Ahead, see suits similar to Demi's and shop our favorite picks.