Nicole Kidman’s recent advice to Katie Holmes regarding Katie’s forthcoming wedding to Tom Cruise may have been spurred on for the sake of Tom and Nicole’s children, Connor and Isabella

A source told Grazia magazine that the kids were worried that Katie is going to back out of the marriage and that’ll upset Tom: “The children want their father to be happy and told Nicole nothing had been firmly set up.”

Connor and Isabella, who saw their mum marry Keith Urban in June this year, told Nicole about their worries: “Nicole usually minds her own business, but she made an exception in this case. She has urged Katie to go ahead with the wedding.”

Connor and Isabella live with Tom and Katie, and their new daughter Suri, in Beverly Hills while Nicole lives with Keith in Tennessee.