My niece is 19 months and still doesn't have her ears pierced. My BIL doesn't want her to get them pierced until she asks for it. I on the other hand want her to get them pierced early because #1 she won't remember #2 less infection than if she was older.
My mom offered to go with her in October (when she's on Vacation) so Sienna will be about 5 months. If my mom didn't offer to do it, she probably would of gotten them pierced now. (3 months)