Livvy Dunne is DONE with the haters … the gymnast is on a lavish vacay in Italy and clapped back at her mega-following with hot bikini shots!

Check it out … the gymnast and “Sports Illustrated” model posted a series of sexy selfies from overseas … but continued to heat things up with a handstand post on a paddleboard …

“Never have seen my haters doing a headstand on a paddle board in the Mediterranean” — the 23-year-old called out the trolls trashing her for taking her looks, skills and success to TikTok …

Livvy is credited as one of the first college athletes to capitalize on her name, image and likeness on a massive scale, and clearly she’s owning IT … as she should!