Ever since Prince Harry and Meghan Markle confirmed their romance, royal watchers and the press have shown a big interest in the dynamic between the former actress and her new sister-in-law Kate Middleton.
Despite their joint outing at Wimbledon and appearing at a few of the same events together, rumor still has it that tension has been brewing between the duchesses.
More stories about Meghan's allegedly rocky relationship with Kate are emerging, including one about a time before Harry and Meghan's wedding when Kate was "left in tears."
According to The Daily Telegraph's veteran royals reporter Camilla Tominey, the Duchess of Cambridge was helping with her daughter Princess Charlotte's bridesmaid dress fitting when things took an emotional turn.
"Kate had only just given birth to Prince Louis and was feeling quite emotional," Tominey explained.
What triggered Kate hasn't been specified, but several sources have revealed that there was a lot of "stress" leading up to the nuptials, and it took a toll on those involved in the wedding, including Kate.
Still, whatever took place that day certainly did not show on Kate's face on Meghan and Harry's big day.
A wedding guest previously told People that both William and Kate were happy to be there, and the latter was in "great form."
The Daily Telegraph's report also hinted at tension between the Duke and Duchess of Sussex and other members of the royal family.
Apparently, Princess Eugenie and her new husband Jack Brooksbank were "upset" that Harry and Meghan, who were set to depart for their 16-day royal tour that weekend, couldn't attend their evening reception.
Concerns about the Royal Fab Four not getting along have continued to grow this week after it was revealed that Princes Harry and William will be diving up their joint court.
Harry and Meghan Markle's office recently revealed that the couple, who are expecting their first child in the spring, will soon be moving away from William and Kate at Kensington Palace and into Windsor Castle's Frogmore Cottage.
Royal expert and author Sally Bedell Smith believes that Harry and Meghan are simply trying to forge their own path, which is different from William and Kate's, who will one day be King and Queen.
"The arrival of Meghan has changed the dynamic of the relationship in a fairly significant way," Smith told People. "It is inevitable and practical because it gives Harry and Meghan some freedom to build up their own collection of interests and charities. Meghan has very strong views on what she is interested in and that may be what Harry shares, but not what William and Kate share."