She captioned the snap from the Rogue photo shoot with a playful monkey emoji.
The 18-year-old actress, who is known to fire back at body-shamers over comments on her racy pictures, debuted the new ink around two weeks ago on Instagram.
Winter's body confidence has recently grabbed the attention of another young Hollywood starlet, Bindi Irwin. The 18-year-old Dancing with the Stars champion called Winter "one of the strongest women that I know," and praised her for encouraging other young girls to "love who they are."
"You look at what she posts and just as an individual she's a lovely being – she's a girl with a message!" Irwin explained to Entertainment Tonight. "She does inspire so many young girls … I think that we share that message so completely because we all get caught up in trying to be like each other – and that's kind of this ideal, and we all try to live up to this ideal – but really it's an individual thought of what beauty is."