6. Christina Aguilera The singer’s nickname, Xtina, is visible under the delicate neckline of the vocalist. Aguilera is covered in five tattoos in all. Post navigation These Animals Are So Bossy They’re Almost Human You Won’t Believe These Incredible Coincidences 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30