'The royal family's past is rife with secrets and lies, but this is the biggest cover-up of all!' the insider added.
Even more shockingly, the publication outrageously claims Prince Charles is jealous of Prince Harry's look-alike mentor, Mark Dyer, who has long be rumoured as the prince's real father.
The 52-year-old redhead and dead ringer for the young Prince has been the centre of paternity rumours for years.
Back in March, the National Enquirer released another bombshell report claiming they had proof Dyer was in fact Prince Harry's real father.
An alleged palace source sensationally claimed to the publication in March that Harry's biological father is in fact a Welsh Guards Officer named Mark Dyer.
'The royal family's past is filled with secrets and lies, but this is the biggest cover-up we've seen!' the insider told The National Enquirer. 'The royal have done everything they can to make the world believe Prince Charles is Harry's dad - even though they look nothing alike.'
'The truth is that Charles is not Harry's real father,' the source explosively claimed to the publication.
Mark, who is regularly referred to as Harry's 'second father', will have his young son Jasper Dyer, 6, as one of Prince Harry's page boys on May 19. Mark was also one of the first members of Harry's close knit group to meet Meghan back in 2016.
The National Enquirer's alleged expose reveals that it was seeing pictures of Mark, Meghan and Harry together that pushed Prince Charles over the edge.
'That should be ME with them, not the commoner,' a Kensington Palace source allegedly overheard Charles saying.
Harry's lineage has long been a matter of intense debate among royal experts. For years, many were convinced his mother Princess Diana's lover, James Hewitt, fathered Harry. He too is a redhead and bears an uncanny resemblance to the 33-year-old royal.
But, this dispute has been disclaimed, as Diana only met James after Harry had been born.
The royal family has not responded to The National Enquirer's bizarre claims.