In the messages, which Jacenko, 43, shared to Instagram on Wednesday, Pixie called her mum a “dumb a**” for not knowing a brand of healing balm.
Jacenko asked her daughter what she wanted her to bring back from a trip to Los Angeles, and the youngster sent a long list.
“Okay so what I want is: Glossier mascara, Aquaphore [sic] stick probs will be in target, Go for Gold top in shot [sic] sleeve and long sleeve from urben [sic] outfitters, Aviatior [sic] nation track suit, and I’m still looking so give me a sec many thanks,” Pixie said.
“Got it,” Jacenko replied, before asking Pixie what an “aquaphore stick” was and commenting that it “sounds rude”.
“No look. Dumb a**,” Pixie wrote back, before sending Roxy a picture of the Aquaphor lip balm she wanted.
Pixie then wrote: “It’s lip balm. Stupido.”
Her PR queen mum, however, took the comments in stride, joking: “Maybe it’s your excellent spelling. I’ll make it happen. As usual.”
“Specific. Very specific,” Jacenko captioned the image, tagging her young entrepreneur daughter.
Pixie’s comments, however, didn’t end there.
When Jacenko shared a snap of herself lounging by the pool on holiday, Pixie again messaged about the gifts.
“No time for resting. Get shopping for my stuff, thanks,” she said.
“Omg I love you. You are 100% my child. Don’t worry I’m not resting. I’m working, just on my back,” Roxy replied.
Pixie recently shed light on what it’s like to be a child millionaire, announcing she was “semi-retiring” in preparation for high school and would likely have enough money to retire fully by the age of 15.
The 12-year-old is an ambassador for Mermade Hair and has more than 100,000 followers on Instagram. She is the proud owner of a $270,000 Mercedes Benz GI, despite being years away from driving it herself.
Speaking of her retirement she told news.com.au: “It’s easier now.
“When I was doing the business every afternoon after school and then activities, I would be doing toy reviews or running through new products that mum was thinking to stock on the website, which was getting tricky. Now I am in Year 6 there are a lot more commitments and homework that also needs to be completed.”