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Kate Middleton checked into the private Lindo Wing of St. Mary's Hospital in Paddinton, west London at 6am and Prince William is at her side, royal family has confirmed.

A spokesperson for Kensington Palace has said "Kate went into labor naturally and things are progressing well."

Though Middleton's due date was previously said to be last weekend, a source told The Telegraph that staffers at St. Mary's had been prepped for a July 19th date.

“A small number of staff at St. Mary’s who might be called upon when the Duchess gives birth were told they had to remain teetotal for a month before the due date,” the insider told the British tabloid. ”They were told the due date was July 19, meaning they couldn’t drink from June 19 onwards. Only a handful of people were told because there are very few hospital staff who might be needed in the case of an emergency.”