Katy Perry Petrified Russell Brand Will Cheat While She’s On Tour

Trouble in Paradise already for newlyweds Russell Brand and Katy Perry?

The “Firework” lass is up to her armpits in blue wigs and fake cupcakes now that her “California Dream World Tour” is in full effect and she’s beside herself with fears that her ex-womanizing hubby is going to play up while she’s away, Star Magazine snoops spill in the March 7 issues.

Word on the Curb has it that the pair have been less than harmonious lately, with “informants types” reporting regular shouting matches between the pair, who wed in the company of lions and tigers (hold the bears…) in India last October. As the story goes, Katy’s already enlisting the guidance of a marriage counselor to help keep her relationship with the former sex and drug addict stable.

“He shouted at her on the phone when he was on the Saturday Night Live set. Russell has been wondering if he can be with one woman for the rest of his life,” whispers an informant.

“Russell and Katy will schedule visits while she’s on tour. And she plans to take most of September off, but its going to be incredibly tough,” says the source. “She’s especially afraid he’ll fall back into his bad old habits. But she believes that if they make it through her tour, they’ll last through anything.”