Everyone and their mama is talking about Kylie Jenner's recent confession that she gets lip injections - but what they should really be talking about is if Kylie's mama was the one who signed off on it. Did Kris Jenner give Kylie permission to get lip injections, or was it Bruce Jenner?

New York City plastic surgeon Dr. Matthew Schulman (who has not treated Kylie) told PEOPLE magazine that patients under 18 typically need parental permission to get temporary lip injections. Kylie Jenner is 17.

"The laws may vary state to state, but it's pretty well accepted that a minor cannot be seen by a doctor, be evaluated by a doctor or be treated by a doctor without parental permission. There must have been someone, presumably her mother, who was with her and would have needed to sign authorization for the treatment."

It seems like the doctor is suggesting that Kris Jenner is the one who allowed Kylie to get the procedure - not her father, Bruce Jenner.

Schulman, who is also an assistant professor at the Mount Sinai School of Medicine, said while the procedure is quite common, it is not advised for minors.

"I don't think there's a safety concern," he explained. "I think the bigger concern with her being 17 is more of a psychological concern: whether she's old enough or mature enough to undergo body transformation."

"I have temporary lip fillers. It's just an insecurity of mine, and it's what I wanted to do," Kylie said in a clip from the newest episode of Keeping Up with the Kardashians. "I'm just not ready to talk to reporters about my lips yet, because everyone always picks us apart."

Kylie Jenner's mother Kris has been criticized in the past for encouraging her daughters to go to extreme measures to stay relevant.