OMG! Khloé and Kim Kardashian are doing whatever it takes for beauty... and pain relief! On Wednesday, KoKo revealed she underwent UNAPPROVED stem cell treatment for "anti-aging" benefits! Whoa! She had to travel to Mexico for the procedure because it's not FDA-approved in the States. Man, that's pretty sketchy... Not wanting to be a "gate keeper" after getting honest about all her cosmetic work, she explained on her Instagram: "I received a muse stem cell treatment from Dr. Khan (sweetest/smartest guy).