Kate Middleton enjoyed several glasses of local wine at an engagement at the Amisfield Vineyard in New Zealand on Sunday.

The Duchess of Cambridge told wine-makers that she was “really enjoying being able to drink again after having baby George”.

A source close to Prince William and Kate Middleton said: “Kate is not pregnant. They want a bigger family in the future, but she’s not pregnant right now.”

Prince William, 31, and Kate Middleton, 32, joined John Darby, 57, owner of Amisfield Vineyard, who gave the royal couple a tour of the premises. Standing tall in a pair of Stuart Weitzman wedges, Kate Middleton nearly toppled over when she hit a rough patch as she toured the vineyard. An eyewitness told Us Weekly: “She slipped and grabbed William’s arm to steady herself.”

Kate Middleton enjoyed several glasses of local wine at an engagement at the Amisfield Vineyard in New Zealand (photo AP)

At one point on the tour, John Darby offered the Duke and Duchess a glass of 2011 Amisfield pinot noir. The wine expert, who discussed the grapes and climate with the couple, explained: “When it gets very cold we use helicopters to stop the frost over the vines by hovering above and stirring up the cold air.”

Prince William exclaimed: “You’re joking! That’s an expensive way to do it!”

He added: “Wow! If you ever need a spare pilot, I’m here!”

John Darby later told reporters: “The Duchess did take a little sip, but I don’t think she’s a big drinker.”

He also explained: “We nearly moved on without the Duke or Duchess having a glass of our wine, but [Prince William] was keen to try it. He said, <<Hang on, let’s enjoy a glass of wine. We can’t pass up the opportunity>>.”

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