Amy McIndewar, 20, began posting images of her daughter Mya Byrne dressed in different outfits on social media just weeks after her birth.
The 11-month-old now has 120,000 Instagram followers and has themed outfit photos taken every day.
"I am very proud of her. I love seeing all the comments about her on Instagram," said McIndewar, from Balloch in Scotland.
"I have had a few negative comments from people saying I am 'sexualising' her but I disagree."
McIndewar admitted her daughter was fashionable, but said she's still a baby and looks "cute" not "sexual".
She said she started taking the photos after seeing other mums on the internet do the same.
"After Mya was born I was on the internet and saw other people doing this sort of thing and thought I would give it a go, but I never thought it would take off like this," the mum continued.
"With one negative comment comes hundreds of positives.
"Some people just don't get what I am doing. It's not something you do everyday, it's only going to be when she is all right doing it."
"I don't see us stopping doing the photographs unless Mya tells me different."
The mother says she has spent around £1,000 on Mya's outfits already.
However she's now getting so many baby clothes sent to her for free by fashion brands that she isn't sure what to do with them.
"I've got packages here turning up at the house from around the world," she added.
"The postman must hate me. And my neighbours too... because they're always having to take stuff in for me."
Dr Petya Eckler, of Strathclyde University, has researched links between Facebook and body image in young women, and plans to work with colleagues to produce a set of guidelines for young people about using social media later in the year.
Speaking about Mya's Instagram account, she said: "This raises issues about privacy and boundaries and children having their own right to decide whether or not to be on Instagram.
"The rights of the individual in this case are taken over by the parents.
"There are two extreme views. I know media scholars in America whose attitude is to sign their children up with Twitter, Instagram and Facebook, to protect their identity online, even though they don't use them or post anything.
"It is like buying your own domain name. Others don't talk about their kids online.
"Others have no boundaries and put up lots. You can't even know what the best course of action is until these kids maybe grow up and tell you themselves."