She follows a strict paleo diet alongside her husband, celebrity chef Pete Evans.
And former glamour model Nicola Robinson, previously known as Nicky Watson, has revealed her paleo option when flying, sharing a photo of her meal of choice online.
Nicola, who goes by the Instagram moniker Nutrition Mermaid, shared a photo with her 31,000 followers of an avocado cut in half, paired with a bottle of health tonic.
The social media snap showed an avocado cut in half, with a bottle of a health drink called Hilbilby Fire Tonic, which is made from a "traditional gypsy recipe".