The 19-year-old stunner didn't chow down on any pie, but instead relaxed on an over-sized pizza slice pool toy in a high-riding blue bikini.
Unsurprisingly, the sexy shots have garnered well over 150K likes in less than 24 hours.
We don't know how many bikinis Ariel owns, but she certainly loves to show them off on Instagram.
Based on these recent pics, the Modern Family actress appears to be winning the battle over the body image issues she recently discussed with Refinery 29.
We applaud you, Ariel. Keep these shots coming!