The Cambridges and the Sussexes both took to Instagram to share posts within an hour of each other. Both accounts have a whopping 11.2 million followers though Sussex Royal is slightly in the lead.

On Wednesday morning, 35-year-old Prince Harry and 38-year-old Meghan Markle's Instagram account 'Sussexroyal' shared a post of Harry's visit to Scotland. His visit to Edinburgh aimed to look at how local tourism can help protect the environment and also support local communities.

Soon after, Prince William and Kate Middleton's account 'Kensingtonroyal' shared a picture of the Duchess at a sporting event in aid of SportsAid. The most popular post was the one of Kate at London Stadium for the SportRelief event. The post garnered 302,296 'likes' within the first 17 hours since it was posted.

Behind the first post, is the post shared by Sussex Royal that promotes Harry's trip. The post received around 248,256 'likes' in 22 hours. Within 15 minutes of Sussexroyal's post, Kensingtonroyal shared a picture of Prince William visiting a daycare center that supports the homeless. 

Harry's post has around 84,000 more 'likes' than William's post which has around 112,541 'likes'. 

In light of reports suggesting that William is concerned that Harry's UK visit will overshadow his Ireland tour, it seems both the brothers shared a post that spoke about their respective endeavors at the same time.

The reports come as a source shared with The Sun that the Duke of Cambridge is concerned about the impact that Harry and Meghan's return may have on his and Kate's royal visit to Ireland.

"Indeed he [Prince William] is glad that he is returning, however briefly - he wishes that it wasn't at the same time as his Irish trip because he knows what will happen is that the spotlight as far as papers and TV are concerned will be fully on Harry and Meghan," the source shared. 

"He recognizes that for the media this will be 'the big story'," the source continued. While the Duke and Duchess of Cambridge are not 'jealous' of the coverage, their tour to Ireland is very important as its the first to be carried out by any member of The Firm since Brexit.