She has had a busy 12 months on the family front, giving birth to Prince Louis last April and becoming a mother-of-three.
And Kate Middleton will mark the beginning of a new year with low key festivities, as she celebrates her 37th birthday on Wednesday.
Kensington Palace took to their Twitter account to share a touching tribute of the royal, tweeting: 'Thank you everyone for all your lovely messages on The Duchess of Cambridge’s birthday', along with a balloon emoji.
The Duchess of Cambridge is expected to mark the occasion with husband the Duke of Cambridge and their three children Prince George, Princess Charlotte and Prince Louis.
Prince William also has an official engagement in the day when he meets pilots and paramedics from London's Air Ambulance.
Over the coming year, the Cambridges' middle child Charlotte is set to turn four in May and then start school in September, when she will most likely join George at private school Thomas's Battersea.
George will be celebrating his sixth birthday in July, while baby Louis, turns one on April 23.
Kate has also become an aunt to sister Pippa Matthew'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.
Catherine Elizabeth Middleton was born to Carole and Michael Middleton at the Royal Berkshire Hospital in Reading on January 9 1982.
She was christened at the parish church of St Andrew's Bradfield in Berkshire on June 20 1982.
Amman in Jordan was home to Kate and her family for a few years in the mid 1980s, where she attended a nursery school from the age of three, before returning to Berkshire.
At the age of 13, she went to the exclusive, private Marlborough College in Wiltshire, where she part-boarded.
During her time there, she represented the college at tennis, hockey and netball.
She graduated in 2005 with a 2:1 in History of Art from St Andrews University where she met and began dating Prince William, whom she married in 2011.
Kate - now an HRH and a future queen - is patron of 17 charities and organisations, and has focused her charity work on helping children have the best possible start in life, particularly surrounding their mental health.
Kate's birthday coincides with the 30th anniversary of London's royal air ambulance crew, which William, a former pilot for the East Anglia Air Ambulance, is due to attend.
Kensington Palace took to their Twitter account last week to confirm the news, writing: 'The Duke of Cambridge will visit London's air ambulance on Wednesday 9th January to recognise the work that their first responders carry out delivering life-saving treatment across London.'
And on Wednesday the palace confirmed William had become a Patron of their charity campaign, writing: 'The Duke of Cambridge has today become Patron of London's Air Ambulance Charity #30yearssavinglives campaign — which aims to highlight the charity’s vital work in delivering life-saving treatment across London, and raise support for the development of new facilities'.
London's Air Ambulance account have said that staff are 'so proud' to be celebrating the 30th anniversary of the service being founded with the Duke of Cambridge, the charity's medical director has said.
London's Air Ambulance is a 'global leader' in emergency response, according to the charity's medical director Dr Gareth Davies.
The service has treated nearly 40,000 patients since its inception according to Dr Davies, who added: 'We have actually stopped counting the number of patients that have had their lives saved.'
London's Air Ambulance, which currently has two helicopters that operate between 8am and sunset, takes 'the hospital out into the street', according to Dr Davies.
'Every day, the group of patients we are treating are those that are literally in the dying process,' he added.
'We are very fortunate to be able to be involved in that and try to turn it around.'
This article has been adapted from its original source.
