Gwen Stefani Kingston Zuma Rossdale Bootleg Theatre Silver Lake Jail Birds Gwen Stefani Kingston Zuma Rossdale Bootleg Theatre Silver Lake Jail Birds Gwen Stefani fueled pregnancy rumors yesterday when she carefully hid her belly while taking Kingston and Zuma to see Jail Birds at the Bootleg Theater in Silverlake yesterday.

Wearing a loose and flowy top, Gwen made sure she kept a bright pink folder or her purse in front of her midsection at all times when arriving and leaving the musical (which bills itself as "Glee behind bars"), letting a nanny coral the boys. But we think we spot a bit of a bump!

Earlier this week, reports of a third pregnancy set tongues wagging that the 40-year-old was trying for a girl with husband Gavin Rossdale. When we asked Gav about it a couple of days ago, he replied that he wouldn't know, "I'm just a singer!"

Not exactly a denial!