Kate Middleton turned 26 years old yesterday and enjoyed a night on the town with her parents and sister Pippa. Prince William was out of the picture, doing his four month pilot training course at RAF Cranwell.

Kate, younger sister Pippa and their parents, Michael and Carole, reportedly had a family party at a flat in Chelsea before heading out to dinner at Tom Adkins restaurant in Chelsea. The sisters went on to Kitts Club in Sloane Square where they reportedly partied until 3:00am.

This may be Kate’s last birthday as a single woman. Rumors have run rampant that she will soon be engaged to marry Prince William, heir to the British throne. The couple are said to be house hunting and she has just been granted a full security detail.

We’ve got pictures of Kate’s family and also a photo of Prince William in the cockpit at flight school.

Photos: WENN

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Filed under: Celebrities, Kate Middleton, News from Across the Pond, Royal Watch