Meghan Markle's sister Samantha says Duchess has 'narcissistic personality disorder' following Oprah interview

Meghan Markle's sister Samantha has declared she can see "narcissistic personality disorder" in the Duchess of Sussex, saying Meghan's insistence she grew up as an only child as "delusional". 

Samantha has given several interviews since Meghan and Prince Harry's tell-all TV special with Oprah Winfrey, attacking her half-sister's claims she "doesn't know her" by sharing family photos of the pair throughout their lives. 

"To suggest that she was an only child was really delusional," Samantha said in an Australian radio interview. 

Samantha also expressed little sympathy for Markle, who told Oprah she had suffered suicidal thoughts during her time as a royal when she was pregnant with Archie. 

"Depression is not an excuse for treating people like dishrags and disposing of them,' Samantha said in another interview with Inside Edition

"I definitely see a narcissistic personality disorder," Samantha added when speaking to radio hosts Fifi, Fev and Nick. 

"I feel sorry for Harry. She pulled him away from his family, all of his friends, the life that he knew."

Samantha said she was "shocked" to see that Oprah didn't question Meghan further about why her family members werent' invited to the royal wedding. 

Meghan did discuss her estranged father and half-sister in the two-hour CBS special, albeit only briefly. When asked about Samantha's 'tell-all' book, The Diary of Princess Pushy's Sister, the Duchess replied: "I think it would be very hard to 'tell all' when you don't know me." 

Samantha provided a series of family photos that featured her and Meghan throughout their lives to Inside Edition, claiming: "We've got photographs over a lifespan of us together. So how can she not know me?" 

One photo of Meghan posing with Samantha at her college graduation in 2008 appeared to disprove the Duchess' claims she hadn't seen her half-sister in nearly two decades. 

"She changed her last name back to Markle... only when I started dating Harry. So I think that says enough," Meghan told Oprah. 

Samantha insisted she had been a Markle before Meghan was, sharing a copy of her petition to change her name which was dated 1997, along with her college diploma, which also bears the name Markle. 

CBS Presents Oprah with Meghan and Harry can be watched in full in New Zealand on ThreeNow.