Peter Phillips and his ex-wife Autumn Kelly’s youngest daughter Isla Phillips is celebrating her 14th birthday today. Isla arrived on March 29, 2012, four years after her parents tied the knot.

The teenager is one of Princess Anne’s five grandchildren, along with her sister Savannah, 15. It has been speculated that Isla’s middle name – Elizabeth – is in honour of her late great-grandmother Queen Elizabeth II, as is the case with many baby girls in the Royal Family, although this has never been confirmed.

Despite being divorced, her Peter Phillips and Autumn Kelly continue to successfully co-parent their daughters. Here, the Daily Express looks at seven pictures of Isla in honour of her special day today.