Katie Holmes and Tom Cruise are reportedly preparing to have their second child together.

The couple have apparently decided the time is right to give 18-month-old Suri a brother or sister, and Katie has sought out a nutritionist to help her conceive.

The actress is now on a course of pre-natal vitamin supplements, having increased her green vegetable intake and cut out raw fish from her diet.

“Katie feels Suri is the right age to try for another," a pal tells the Mirror.