Shocking “child-swap” claim by Swedish stunner rocks the foundations of Graceland.

In a bombshell that will stun all of show business, the Lisa Marie Presley the world knows may not be Elvis’ REAL biological daughter!

As the 37th anniversary of the King’s death is mourned this month, The National ENQUIRER investigated the most shocking claim ever made against the $300 million Presley estate.

In stunning new legal documents, in which Elvis’ ex-wife Priscilla is named as a defendant, a Swedish woman claims she was replaced by Lisa Marie in a bizarre and secretive child-swap at age evidence may support her.

The woman, Lisa Johansen – a married mother of four with a law degree – said the hidden switch was made for security reasons after Elvis’ death on Aug. 16, 1977 when she was spirited away from her father’s famous gated home in Memphis, Tenn., to Scandinavia.

In Sweden, she was replaced by an imposter, Johansen claims.

That impostor being the woman the world knows today as Lisa Marie Presley, she claims in the explosive legal docs.

For the FULL STORY with ALL the details you won’t find anywhere else – it’s only in the new ENQUIRER – on sale NOW!