A Sydney mother's 13-year-old daughter clearly appreciates the finer things in life.

Pixie Curtis, the young millionaire daughter of PR maven Roxy Jacenko, has revealed her love of luxury brands in a brutal message exchange leaked by the 44-year-old.

Roxy has developed a reputation for spoiling her children, and 'mini-mogul' Pixie showed off her knowledge of luxury brands after asking her mother for ice cream despite feeling unwell.

'You can't eat ice cream, babe. You're not well,' Roxy wrote in the text messages which she shared to her Instagram Stories.

'Have some fruit ... You can have ice cream after dinner. Just let me know what one and the girls will go get.'

Pixie then answered back, 'If I asked for ice cream, I don't want fruit in return. It's like asking for a Birkin but getting a Michael Kors bag instead,' the teen suggested.

Roxy was shocked with the savage response from her brand aware teen daughter. 

'F**k I nearly cried laughing. To be fair you don't strike me as a Michael Kors kinda gal,' she replied.

Pixie has already started and closed multiple businesses at just 13 years of age.

She is also no stranger to the world of E-commerce, enjoying partnerships with Naked Sundays sunscreen and Mermade Hair.

Pixie was dubbed a mini-mogul when she was the face of Pixie's Bows, a hair accessory range for children and Pixie's Pix, an online toy company.

She recently spoke of receiving a $3,000 Goyard handbag for Christmas from her parents.

Pixie has previously said she's saving for a Range Rover for when she's old enough to drive.

Earlier this year, Roxy, who also shares 10-year-old Hunter with Oliver Curtis, sat down for an exclusive interview with Daily Mail Australia and was asked if she spoiled her children too much.

While many have criticised the media personality for spoiling her children, Roxy says she instils hard-working ethics onto them.

'My kids are no different to any other kid in terms of writing wish lists,' she explains.

'Let them do the research! Let them scour the internet, let them have wants and desires, and then realise that in order to get those things in life, you have to work hard.

'At that age, it's whether you're doing your homework well, you're attending, tutoring, you're excelling at school. I've got no problem with it.'

But like any parent, the mother-of-two does worry about their behaviour as they grow older.

Hunter and Pixie are still young, but adolescence isn't far away for the siblings - especially Pixie, who turned 13 this year.

'Kids these days are a lot more exposed to things that I wasn't in my generation. What we did as adolescents and what they do today is very different,' she says.

'I think as a parent one of the most important things is that we just culture them to know that if anything is to happen, that you have our full support, that we'll help you fix things.

'But also to teach them at the same time what can happen - if you go to a party, and there's alcohol there, I prefer you don't do it. But if you do, these are the ramifications. That if there's boys at the party, this is what can happen.

'It's about having those difficult conversations, because you can't hide them from what's out there. You just have to make them aware of it.'