Jesinta Campbell is glowing as she spruiks sustainable scrunchies in a flowy aqua gown

Jesinta Campbell welcomed her second child, a son, last week.

And on Thursday, the 29-year-old Australian model was back to work as an influencer to promote a good cause.

Sharing a throwback photo of her looking glamorous, Jesinta proudly showed off her baby bump while holding a plastic cup containing sustainable scrunchies.

The former Miss Universe Australia was glowing in a flowy aqua dress as she cradled her pregnant belly while posing on a beach.

‘These sustainable scrunchies have been designed to continue to support Take 3’s mission to protect oceans and reduce plastic pollution,’ she wrote. 

‘Made from post-consumer recycled plastics, 100% RPET, all profits from the sales of the scrunches is being donated to @take3forthesea.’

‘A purchase you can feel good about,’ she continued. 

Jesinta gave birth to her son last week. 

Husband Buddy Franklin, 34, announced the birth on Instagram at the time, sharing a sweet black and white photo of himself cradling his newborn. 

‘Our baby boy has arrived,’ he captioned the post, adding a blue love-heart emoji.

Last month, Jesinta admitted she was ‘nervous’ about having two children at home.

She shared a photo on Instagram of herself pushing a stroller, and wrote: ‘Pre-dinner waddle to the shops. Can’t believe we’ll be whipping out the double pram soon.

‘Would love any advice/tips from other mums with a one-year-old and newborn. I would be lying if I said I wasn’t nervous.’