12-15-2015 09:15 AM - edited 12-15-2015 01:52 PM
That's a really great question.
To my understanding, you must be 18 to purchase a CD with a Parental Advisory sticker. I recommend visiting your local store for more information. You may wish to bring along a parent when you visit to purchase any product with this type of restriction.
I hope this helps. Thank you for writing to us!