Flanked by Prince William, her family and some of her closest friends, the Duchess of Cambridge's 31st birthday turned out to be quite the circus!
The group had the best seats in the house as they took in the spectacular Cirque du Soleil's Kooza show at the Royal Albert Hall, close to Kate's London home at Kensington Palace.
With William, 30, beside her (wearing eyeglasses), she was spotted clapping and laughing at the show at the Royal Albert Hall, and an observer reports she was looking "happy and radiant."
Since a trip to church on Christmas Day with William and her family, Kate has been spotted out shopping near her parents' home in Bucklebury, Berkshire.
Wednesday's outing is another sign that Kate is coping with the illness that forced her to enter hospital in the first weeks of her pregnancy.
Kate's Birthday – Acrobats Take Center Stage

The Duchess and Duke of Cambridge
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