Halsey has two different tattoos on her right hand. The first being an "XXX." Halsey revealed this tattoo has two meanings in her iHeart Radio interview. "My grandma used to do x's for my brothers and I, so it's me and my two brothers," she said. "But it kind of turned into a different meaning, because it almost means like a parental advisory, like it's an explicit thing."
Halsey also has her lucky number "17" on her knuckles.