The 24-year-old actress inked the inaccurate formula of water on her right hand and she acknowledged the error in an interview at Comic-Con, where she was promoting her new film "The Hunger Games: Mockingjay - Part 2", reported Ace Showbiz.
"I know that the two is high and in H2O the two is supposed to be low," the 24-year-old star said of the skin-coloured tattoo, which she said was her "watered-down rebellion."
"I should've Googled it before I got it tattooed on my body forever."
"It's just like, I was with Liam's family and everybody was getting tattoos," she said before explaining why she chose "H2O".
"I was like, well, I'm always going to need to be hydrated, so I guess I should just get an H2O on my hand. It's the colour of a scar so it's au naturel and it's literally the most unrebellious tattoo that anybody could ever get," she added.