Mum who invoiced for her toddler's $548 shoes shares the real reason she spoils her child.

British mum Sarah Bryan made headlines all over the world when she sent the parent of her young daughter’s friend an invoice for $548.

According to Bryan, her three-year-old daughter Isabella’s Italian designer booties were “scuffed” and had been drawn on with a permanent marker during a playdate.

After the incident, Bryan, who is a fashion designer, model and aspiring actress, appeared on Good Morning Britain and was reduced to tears during an interview with host Piers Morgan.

"You’re not a responsible parent...you’re the worst kind," Morgan told her during the interview.

Now, Bryan has opened up about her traumatic childhood, saying she takes any opportunity to spoil her children.

"I understand why the invoice has created so much outrage but wouldn’t anybody spoiled [sic] their children if they could?" she told The Sun.

mummy snuggles❤

A photo posted by Sarah Louise Bryan (@itssarahbryan) on Jan 9, 2017 at 2:21pm PST

"I was made homeless at 15 with a one-year-old after my mum kicked me out and we spent years struggling, relying on £50 a week and we had no luxuries. It’s only been the past two years that I’ve started to earn good money through my fashion work, design and some acting."

Bryan's invoice to the mother of a fellow child went viral when it was made public on the weekend. It read:

So Isabella has just come home from her playdate with your child and I am disgusted to see her new Italian leather shoes are all scuffed and have a Sharpie mark on them.

Below is the bill for these replacing because they can not be fixed these are fine Italian leather! As a designer I do not want my child to look anything less than pristine.

Bill for a replacement pair of Italian fur booties £325 (AU$548) to be paid by 01/02/2017 before I take this higher. Thank you. Sarah.

Bryan said she had since apologised to the fellow mother for sending the note.

"I’ve apologised to the mother since and told her I was worked up and acted very quickly. She’s forgiven me and understands I wasn’t thinking properly," she said.

"We are humans and we all make mistakes."