Speaking on the Royally Obsessed podcast, Ms Bowie said: “What Harry has said about Meghan’s treatment in the press and how all they’re doing is good deeds a lot of the time.
“It’s weird how mercilessly the media has treated her in particular.”
Ms Fiorito added: “It’s really eerie with Harry set to turn 36 next week how parallel their lives have been.
“Obviously with a different outcome.
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“I think what Diana experienced at the hands of the press was just unheard of.”
Ms Bowie said: “The way in which he said, ‘she’s only done good things and she’s only been criticised’ and I think that rings true to what Harry has said about Meghan as well.”
Royal expert Duncan Larcombe has previously said he hopes the couple will recognise what went wrong in her strategy.
He noted Diana tragically only had Mohamed al-Fayed’s security team when she died.
“We know how that ended.
“There are quite shocking and chilling similarities in the situation that Harry is now in.
“I hope that he is sensible enough to acknowledge where Princess Diana actually went wrong in her strategy.
“There were times where she did make mistakes.”