Prince William gets cutest gifts for Prince George and Princess Charlotte

Kate Middleton the Queen

She walked to the service at St Mary Magdalene Church on the Sandringham estate with husband Prince William and other royals, while the Queen travelled by vehicle.

Kate has also become an aunt to sister Pippa Matthews's baby son Arthur, and the Cambridges are also awaiting the arrival of the Duke and Duchess of Sussex's first child in the spring - another cousin for George, Charlotte and Louis. According to the royal expert, the duchess looked different.

Prince William, a former pilot with the air ambulance service in East Anglia, flew from Kensington Palace for 25 minutes before landing on a helipad at the Royal London Hospital.

Meanwhile, Kate's first royal engagement of the year hasn't yet been revealed. The first one was a plush helicopter, flawless for William and Kate's newborn.

"I took a lot home without realizing it", the prince said a year ago when he launched the Mental Health At Work initiative in Bristol.

William will reportedly join his wife and family during the evening to mark Middleton's big day.

2010: Kate's 28th was, once again, celebrated at the Middleton home with her family and royal beau.

At the event, a young girl presented William with a handmade birthday card for the mother of three.

A source told Vanity Fair that Kate would celebrate her 37th with a little tea party at home with "candles and presents" alongside Prince George and Princess Charlotte. "The Duchess undertakes royal duties in support of The Queen, both in the United Kingdom and overseas - and devotes her time to supporting charitable causes and organisations, several of which are centered around providing children with the best possible start in life". Middleton was "equally attractive", but she's "fully made up" in 2015. Following in the footsteps of her older brother Prince George, Charlotte takes weekly dance lessons.