Fans quickly jumped to the post, with one asking: 'Is Isla having a baby or are they having a baby?'
'Omg she’s pregnant for sure,' another added.
Another fan excitedly added, 'SURELY A PREGNANCY ANNOUNCEMENT.'
However, Josh was quick to comment shutting down the rumours.
He wrote, 'Let’s just set a few things straight here knowlz before you blow the internet up! There’s definitely no baby coming, and there’s no ring for a while either.'
Elyse and Josh have been dating for five years and shot to fame after winning The Block last year.