Monty added: 'Yes, she eats! She's a pig!'
The topic was quickly changed, however the radio star’s appeared to touch on it again later on in the show when the topic of conversation turned to the Network Ten show Australian Survivor, with Monty suggesting that Bec would make a great team member.
But you know what I was thinking is you wouldn't be able to have your glam squad there,' he teased.
Rebecca joked: 'I would fade away.'
To which Monty quipped: 'You would turn into literally just a bag of bones.'
Last year Rebecca opened up about dealing with ‘skinny-shamers’.
"Scrutiny of my body has been going on my entire life," Bec, 36, told Sunday Life.
"Does it get boring? Yeah, it gets boring, but look at my family, we've all got the same legs! It's boring, but I don't think it's going to go away. I've just learnt to deal with it."
A mother to Oscar, seven, Billie, five, and twins Darcy and Tom, two, the wife of AFL legend, Chris Judd even deleted her Facebook and Twitter accounts to avoid her body-shamers.
And now she’s deleted negative comments that appear on her Instagram page, which has an incredible 701,000 followers.
"Most of the audience out there who've been following on Postcards, or the weather on Nine or Instagram, have been following me for eight years, and see I'm still the same," she said of her body shape.
"Occasionally, some blow-in will have a go, but I'm good at blocking and deleting," she told the publication.