Nicole Kidman NicoleKidmanPlacenta.jpg Nicole Kidman's marriage to Tom Cruise may be a thing of the ancient past - but according to a new book about Cruise, it sounds like Nicole's holding on to at least one memory!

NineMSN reveals that, in his new tome Tom Cruise: An Unauthorised Biography, British journalist Andrew Morton writes that Nicole kept "some of the placenta" from the miscarried child she suffered with Cruise!

EEEEEEEEEEWWWWWW.

Of course, Nicole had a perfectly good reason for holding onto her placenta (man, there's a sentence you never expect to catch yourself typing) - in the event of a paternity dispute, the Aussie actress wanted to be able to prove that Tom was the father.

The Church of Scientology, of course, has already gone on the record describing Morton's entire book as "a bigoted, defamatory assault replete with lies".

We can't say for sure whether or not the incident Morton describes is true, but one thing's for certain - the story's indisputably nasty!