One of Biles's tattoos that we haven't seen much of is her "XO" tattoo. The gymnast hasn't explained the meaning behind it, but she got the phrase tattooed on her inner lip. According to a past interview with NBC Sports, it's the second piece of ink she got in her collection, although she admits it's a little faded now.
"I need to get it touched up," she said. "I've always wanted a lip tat, and I heard it didn't hurt. So I went and got one."