Dakota Johnson
Johnson and her husband got matching tattoos at one point. The tattoos are so small that they're almost impossible to make out through the camera lens. We can see an infinity symbol with one X on either side, but that's pretty much it.
Sophie Turner
After Game of Thrones ended, Sophie Turner spent some quality time in the chair at the tattoo shop. She got this G tattooed on her finger to commemorate her relationship with her grandfather. He passed away while she was filming the show.