Her post riled a number of parents. "And your [sic] planning inflicting pain on your child why?" one mum wrote.
"Leave her alone until she is old enough to choose for herself whether she wishes to have her own ears pierced. It's her body not yours."
Another parent said piercing was "child abuse and should be made illegal".
One parent pointed out the health risks of piercing a baby, reminding the mother that aftercare needed to be considered.
She explained that "babies often pull their ears when they're tired, which could be painful for them or cause more damage."
She added: "There's the chance they will pull an earring out and put it in their mouth. They could get caught when they're playing, and there's the issue of being comfortable when sleeping and feeding."
However, a number of parents jumped to the defence of the mother.
"It is a case of do what you want because it's her baby! I'm actually one of the only people I know with a baby/child that hasn't got my babies ear pierced, but no way do I look down on or judge people that do! [sic]", Kayla wrote.
"It may look tacky to you, but just remember everyone has different opinions!!"
"Bettsy", who pierces ears explained the dangers of piercing a baby's ear but warned others not to be so judgmental.
"I pierce ears for a living and we pierce babies from 4&1/2 months old providing they've had all injections etc," she wrote.
"It's difficult as there are pros and cons to both sides. We aren't allowed to pierce if the child has anything in their mouth (dummy etc) or if the child says at any point they don't want to.
"The person also has to be fully awake (can go into shock if sleep/anything in mouth) and stress-free.
"I personally couldn't do it at a young age but every mother is different and entitled to their opinion/belief."