Katie Holmes preparing for second baby?

Katie Holmes has sparked rumours that she's preparing for a second baby with husband Tom Cruise - after reports emerged that the actress is undergoing intense Scientology "auditing".

After promoting movie The Extra Man and The Romantics at Sundance, Holmes is back to spending hours at the Hollywood Scientology Center.

Last week, she spent more than four hours at the centre, sources say.

A source told Page Six, "This is exactly what happened just before she got pregnant with Suri. Tom has made no secret of the fact that he would like another baby. It is almost as if she is being prepared for it."

According to a church-run website, which campaigns for silent birth, Scientologists believe the "health and the sanity of the child begin long before birth."