William and Kate's new battle against Harry and Meghan

It's been quite a year for the royal family.

With the many celebrations that have happened as of late in the establishment, there's also been the rumour mill churning away about an apparent royal feud between the Duke and Duchess of Cambridge and the Duke and Duchess of Sussex.

This was further fuelled when Prince Harry and Meghan Markle formally separated their household away from Kensington Palace and Prince William and Kate Middleton.

The Sussexes' official communications are now based out of Buckingham Palace, while the couple now live 36 kilometres away in Windsor.

However, following the birth of Harry and Meghan's first child, Archie Mountbatten-Windsor, the brothers and sisters-in-law have reportedly put their alleged rift behind them.

But it seems the Cambridges and Sussexes now have a new battle they're about to face, and it's all on social media.

As part of Harry, 34, and Meghan, 37, splitting off from the Cambridges, the couple launched their own Instagram account which has proved to be hugely popular.

The royal couple's Instagram account broke a world record when it launched becoming the fastest account to reach one million followers on the platform.

Their growth has only continued and now the Sussex Royal account is fast approaching to take the crown from the Kensington Royal account, which Wills and Kate use, for the most followed royal account.

As it stands Wills and Kate's Instagram has 8.8 million followers with 1,793 posts and Harry and Meghan's has 8.1 million followers with only 26 posts.

Given that Harry and Meghan have reached that number in a mere two months, we reckon it won't be long until the take the top spot for most followed royals.

All they need to do is post a few more photos of adorable baby Archie and they'll be good to go.