Pippa Middleton had a very interesting way of keeping fit during her pregnancy

She's in her third trimester.

It seems like Pippa is in high spirits as she awaits the arrival of her first child. And now she has revealed that she has kept fit during her pregnancy by taking part in ballet classes. In her recent column for Waitrose Weekend, Pippa, who celebrated her 35th birthday on Thursday, wrote (via Hello!): "I feel far from a ballerina, but I'm equally determined not to break into a penguin-style waddle and plod around with bad posture. "So with this in mind, I've continued to embrace barre-inspired workouts throughout pregnancy - a form of exercise taken from ballet which involves the small, isolated movements that develop flattering muscle tone - or so I hope." Pippa and her husband James were recently soaking up the Tuscan sun ahead of the arrival of their first child. The pair decided to jet off on a babymoon to enjoy some downtime before Pippa gives birth next month. Staying at celeb favourite, Il Pellicano Hotel, Pippa and her husband were spotted resting by the beach where they enjoyed some drinks and a spot of swimming.