The mother-of-one has also been criticised for cutting out her old friends after beginning her romance with the Queen's grandson.
One of Meghan's former friends, English TV personality Lizzie Cundy, opened up about her former friendship with Meghan - whom she met at a charity dinner in 2013 - in an interview with This Morning.
According to the Wedding TV personality, the two famous women discussed dating, with Meghan suggesting she was looking for an English boyfriend.
"We were having a chat and then she said: ‘Do you know any famous guys? 'I’m single and I really love English men.'
"So I said: ‘We’ll go out and find you someone’."
The 49-year-old reached out to Meghan when the news of her relationship with Prince Harry first broke, but Meghan didn't reveal any details or make an effort to catch up.
After texting Meghan saying "I heard about Harry," she received a reply which read: "Yeah, I know. We’ll try and hook up."
The British socialite believes their friendship ended because the royal family advised Meghan against speaking to the media.
"I was literally ghosted by her," said Lizzie.
Prince Harry was also recently criticised for appearing to be "bad mannered and rude" during US President Donald Trump's visit to Buckingham Palace.
The Duke has been at odds with Trump since the president called Meghan "nasty" after hearing of her support for Hillary Clinton in the 2016 presidential election.
According to The Sun, Prince Harry appeared to "not take any part in his royal duties" during the event.
Royal commentator Ingrid Seward suggested that "Harry did look grumpy and as if he didn’t want to be there."
"He appears to be behaving in a rather immature way and letting his personal animosity take over from his natural good manners."
The royal expert believes Prince Harry should act more like the Queen.
"Whatever his personal feelings, it’s his duty to support the Queen regardless and take a tip from his grandmother who has never allowed her personal feelings to interfere with her duty.
"It’s bad manners and rude."