Harry, 34, and Meghan, 37, who recently welcomed baby son Archie, launched their own profile, Sussex Royal, in April after separating their royal household from Kate, 37, and William, 36.
And just over month later their fanbase already stands at a staggering 8 million followers, while the Kensington Royal account is just ahead of them with 8.8 million.
While the Sussex account has just 26 posts and follows 16 people, the Cambridge account features 1,792 posts and follows 129 people.
Scroll down for video
The Duke and Duchess of Sussex’s Instagram account is on the verge of taking over the Duke and Duchess of Cambridge’s following – just less than two months after unveiling it. They are seen during their Australia tour last year
Harry, 34, and Meghan, 37, who recently welcomed baby son Archie, launched their own profile, Sussex Royal , in April
Similarly, Harry and Meghan seem to pull in more likes – perhaps helped by their larger American audience, with the first picture of their son racking up 2.9 million double-taps.
Meanwhile Kate and William’s recent post celebrating their eight anniversary racked up just under 1 million likes.
In April Harry and Meghan’s Instagram account broke the world record for the fastest time to gain one million followers on Instagram.
The profile racked up a staggering 150,000 followers in the 30 minutes after it was unveiled, and by the following morning had accumulated a record-breaking 2.2 million followers.
The Kensington Royal account is just ahead of them with 8.8 million, but launched years ago and has 1,792 posts – Kate Middleton is seen planning the Royal Horticultural show this year
The Guinness World Records confirmed they had broken the record by reaching the 1 million milestone in just 5 hours and 45 minutes, taking the title from K-Pop star Kang Daniel, who achieved 1 million followers in 11 hours 36 minutes in January.
Before this, the record holder was Pope Francis, who reached one million in 12 hours after debuting his verified Vatican media channel franciscus in 2016.
The Sussex Royal profile picture is an image bearing a white version of couple’s royal cypher – the entwined initials H and M below a coronet – on a navy background.
Their first post – a picture gallery- is kicked off with the same blue background featuring their monogram, and a welcome message written in a mix of italics and upper case fonts.
The carefully chosen pictures featured in the gallery, highlight the work they are most passionate about, and include their recent visit to a girl’s school in Morocco, Harry’s work with African conservation charities and Meghan’s cooking project with the Grenfell community.
More recent additions include the announcement the arrival of their son, the first picture of Archie and the unveiling of his name.
Last month the Duke and Duchess of Sussex’s new social media account, Sussex Royal, broke the world record for the fastest time to gain one million followers on Instagram. Among the gallery of their highlights the Duke and Duchess of Sussex are pictured during their visit to Sussex last October
A day later the account had accumulated a jaw-dropping 2.1 million followers – despite following just 23 people, including Kensington Palace and Princess Eugenie
Lat month Kensington Palace’s account, which is now assigned to Kate and William, stood at 7.1million followers.
Ex-Suits star Meghan used to have her own personal Twitter and Instagram accounts, as well as a lifestyle website thetig.com, but closed them down ahead of her wedding to Harry.
The Sussexes’ new Instagram account was introduced less than a month after the royal family published new guidelines for members of the public interacting with them on social media.
It warned that trolls who post offensive or abusive messages on official royal channels will be blocked, and may even be reported to the police.
Harry and Meghan seem to pull in more likes – perhaps helped by their larger American audience, with the first picture of their son racking up 2.9 million double-taps.
Last month Kensington Palace’s account, which was been assigned to Prince William and Kate, stood at 7.1M followers, and it now stands at 8.8M