Megan Fox managed to keep her baby bump a secret until she stepped out onto the CinemaCon red carpet in Las Vegas on Monday night.
But her third pregnancy reveal left fans with more questions than answers. Questions like; who the daddy Megan?
After all, the Teenage Mutant Ninja Turtles star filed for divorce from her husband and father of her two other children, Brian Austin Green eight months ago.
The 29-year-old decided to have a bit of fun with the speculation via a comical post on Instagram on Tuesday afternoon.
Beneath a collage of pictures of three of her previous male co-stars, including Shia LaBeouf, Will Arnett, and Jake Johnson, the mother-of-three wrote “#notthefather”.
The joke was carried on by funnyman Will Arnett who joked about the news that he is officially not the father. He told ET:
"She said I'm not the father?" Arnett quipped. "That's a big surprise to me."
Clearly the expectant mum’s sense of humour is growing with her belly.
Despite the gossip a source reportedly confirmed to PEOPLE Green is "of course" the father, adding that the pair "never stopped loving each other and they will never stop being devoted parents to their boys.”
PEOPLE reports Fox petitioned for divorce in August after five years of marriage and 11 years together and according to legal filings the divorce is still pending.