Who's The Father? - Katie's Baby Shock!

The actress is keeping mum on the subject...

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Katie Holmes jetted into Australia last week for McHappy Day – and rumour has it a little stowaway joined the star on her trip Down Under!

Yep, back in the States, buzz has reached fever pitch that Katie, 40, is pregnant – despite the fact she hasn’t been seriously dating anyone since her romance with Jamie Foxx hit the skids.

“Katie keeps a lot about her life close to her chest, but it’s no secret among her friends that she wants another child,” dishes NW’s insider. “She’s always said that it would be ideal to be in a stable relationship the next time she had a kid – unlike the one she was in with Tom [Cruise] when they had Suri – but it’s by no means a necessity. She’s always maintained her diet and vitamins with her fertility in mind, so she’d have no problem falling pregnant.”