Scientology couple John Travolta and Kelly Preston are urging Katie Holmes to have a 'silent birth' when she delivers fiance Tom Cruise's baby next year and follow the church's strict doctrines.

Scientologists believe children should be brought into the world without any fuss and be allowed to quietly get used to their surroundings. That means no music, no chatting and no expressions of pain from the mother.

Preston explains: "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."