John Travolta and Kelly Preston have apparently advised Katie Holmes on how to have her baby.

The couple, who like Holmes' fiance Tom Cruise are members of the 'cult' church of Scientology, have suggested that the Dawson's Creek actress have a 'silent birth', meaning that the child comes into the world without music, background sounds or expressions of pain from the mother.

Theoretically, this method should ensure that the baby can adapt to its surroundings without a fuss.

IMDb.com quote Preston as saying: "It's just because everything in moments of pain is really recorded and you want to have that (the birth) peaceful and clear of sort of suggestions or different words that can then affect them (babies) in their future."