Kate woke up sober this morning, so naturally it is already being speculated that she's trying to get knocked up, with a source telling The Sun:

“Kate is taking supplements every day. Jamie suggested she take folic acid because of its benefits. Her pals have been teasing her that she's taking acid so openly - considering her reputation."

Ha ha ha, what a hilarious bunch of chums she has, we bet it's quick-witted Sadie Frost or Davina Taylor who came up with that gag.

The insider - who's probably never been any closer to the model than the above guy - continued:

“While there’s been lots of speculation about Jamie and Kate getting married, what they want is to extend their family.”