Meghan Markle is still waiting to become a British citizen despite starting her application up to two years ago.
It is believed that the Duchess of Sussex began the process shortly after her engagement to Prince Harry was announced in November 2017.
Kensington Palace said at the time she would be treated like anyone else.
Prince Harry’s communication’s secretary, Jason Knauf, said Ms Markle would be ‘compliant with immigration requirements at all times’.
And it appears she still has not been granted citizenship, despite being a member of the Royal Family.
A friend of the Duchess said: ‘Meghan is not yet a British citizen.
‘It might seem extraordinary, given that she’s been married to the Queen’s grandson for 18 months, but she accepts that it’s a slow process.’
There are a number of ways you can apply for citizenship, but it is likely that Meghan is applying as a spouse of a British citizen.
If someone comes to the country as the fiancee of a British citizen, they must marry within six months, which the Duchess achieved after marrying Harry in May 2018.
Before a foreigner comes into the UK as the spouse of a British citizen on a family visa, they must submit a range of evidence to prove their relationship is real.
This includes email and phone conversations, holiday photos and flight tickets.
After living in the UK for three years, a spouse can then apply for citizenship providing you have either indefinite leave to remain, settled status under the EU Settlement Scheme or a permanent residence document.
You then have to take a test with questions on life in the UK, which costs £50, to attain citizenship.
Potential citizens also have to prove they have knowledge of English, Welsh or Scottish Gaelic and be of good character.
You must also not have spent more than 270 days outside the UK during the three years before the application.
But the Home Office dictates people may be exempt from the residency requirements if your partner works abroad either for the UK government or an organisation closely linked to government, which may apply to the Duchess.
It costs £1,330 to apply to become a British citizen.
A Kensington Palace spokesperson told MailOnline today: ‘The process takes several years.’