The news comes amid reports of a royal feud between Kate and Meghan.
The fab four both shared Christmas cards this week. Kate and William posted an adorable family portrait, which showed the couple with their children Prince George, Princess Charlotte and baby Prince Louis. Meanwhile, Harry and Meghan shared a never-seen-before snap from their wedding at Frogmore House in Windsor in May.
Over the past month, the 37-year-old former Suits star has been the subject of multiple reports suggesting she is difficult, has a strained relationship with Middleton and has been demanding towards the royal staff.
“It has put pressure on her relationship with Harry. He’s very frustrated with how little can be done,” a source told Us Weekly.
After the unexpected departure of her personal assistant last month, this week it was announced that another member of Meghan's staff was leaving, prompting further speculation about the Duchess' attitude, despite Kate Middleton having had a similar staff turnover when she and Prince William got married.