At the time of Meghan and Prince Harry's 2018 wedding, it was reported that Meghan and Kate had fallen out.
Reports surfaced that Meghan had 'made Kate cry' over bridesmaids arrangements.
Further details remained unclear until now.
A new report states that the pair fell out when they disagreed over tights for the bridesmaids.
"There was an incident"
Royal protocol insists that royals must always wear tights at formal events.
At Kate and Prince William's 2011 wedding each of their bridesmaids wore tights.
However, Meghan reportedly defied protocol and demanded each of the bridesmaids go bare-legged.
A friend (who remains anonymous) told Tatler magazine: "Then there was an incident at the wedding rehearsal.
"It was a hot day and apparently there was a row over whether the bridesmaids should wear tights or not.
"Kate, following protocol, felt that they should. Meghan didn't want them to."
Previously two sources told The Telegraph that the pair had argued over the bridesmaids' outfits.
The original article said: "Kate was left in tears following a bridesmaids dress fitting for Princess Charlotte.
"Feeling quite emotional"
"Kate had only just given birth to Prince Louis and was feeling quite emotional."
Since Meghan and Harry left the royal family in March of this year, Kate and William have been forced to step up their royal duties.
Frequently addressing the public and charities during the coronavirus pandemic, the Tatler article also says Kate now feels "exhausted and trapped".
Her reported exhaustion was hinted at by Kate herself when she spoke to BBC Breakfast about home schooling duties.
She said: "The children have got such stamina I don't know how.
"Honestly, you get to the end of the day and you write down the list of all the things that you've done in that day.
"So you pitch a tent, take the tent down again, cook, bake. You get to the end of the day - they have had a lovely time - but it is amazing how much you can cram into one day that's for sure."
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