The star also posted a throwback photo of the minute she discovered she was pregnant with baby Gene.
"First Carji with a bump on board," the glowing mum wrote.
The planet is enjoying the jokes between the two celebrity mummas.
The star has been applauded for normalising breastfeeding.
Baby Reid entered the world ahead of the AFL Grand Final this weekend.
"He thinks he's Spider Man now, so we're safe from crime."
'I'm glad I had a career before having a baby.'
Motherhood often requires some comedic relief!
"I have help and a half," she admitted.
Mum, is that you?
Who knew they were mates?