The controversial former Good Morning Britan star sat down with Australian journalist Karl Stefanovic to discuss his ongoing feud with Meghan and Prince Harry.
Piers -- never one to hold back -- got candid on how he really feels about the Duchess and it wasn't pretty.
Interestingly enough, the two reportedly used to be friends when Meghan was a budding actress without a prince.
According to Page Six, their friendship began over Twitter around 2015.
Piers and Meghan allegedly began communicating on the social media platform during her time on the TV show Suits.
The drama reportedly began when Meghan ghosted Piers -- who's known for his bully tactics in reporting -- after they met for drinks in London one year later.
Piers claims it's the same night she met her royal husband.
In an upcoming interview with Australia's 60 Minutes airing on Sunday, Piers continued to launch his tirade against Prince Harry's wife.
"I don’t believe a word she says," he told Stefanovic in a teaser that was released on Friday.
Piers proceeded to give an example of Meghan's alleged "lies."
Bringing up the Duke and Duchess of Sussex's March interview with Oprah Winfrey, Piers called BS on Meghan's claim that she and Harry wed "three days" before the world watched their royal wedding.
"We called the archbishop and we just said, look, this thing, this spectacle is for the world, but we want our union between us," she told Oprah. "So the vows that we have framed in our room are just the two of us in our backyard with the archbishop of Canterbury."
However, Piers alleged that if her claims were true, "that [ceremony] would make the archbishop of Canterbury a criminal."
"They were downright lies," he stated.
The archbishop of Canterbury has confirmed he legally married the couple at Windsor Castle on May 19, 2018, but didn't disclose what was discussed behind closed doors.
"I signed the wedding certificate, which is a legal document, and I would have committed a serious criminal offence if I signed it knowing it was false," the head of the church of England said.
This isn't the first time that Piers has questioned Meghan's comments.
Telling Oprah she was suicidal after claiming she had zero support from the royal family set Piers off.
He launched a full on-air tirade on Meghan during a live segment of Good Morning Britain and quit the show after one of his co-hosts called him out for his insensitive remarks.