Jason Isaacs’ “White Lotus” costars have revealed whether he wore a prosthetic penis for his full-frontal nude scene during Episode 4 of the show’s third season, titled, “Hide or Seek.” “That wasn’t his real penis,” said Isaacs’ onscreen son Sam Nivola (Lachlan), during a recent interview with TV Insider.

When Jason Isaacs bared it all on The White Lotus, he wasn’t really baring his all—here’s the truth behind the Harry Potter alum’s full frontal scene.

Jason Isaacs’ TV children are setting the record straight on that shocking full-frontal moment on The White Lotus. “That wasn’t his real penis,” Sam Nivola, who plays Lachlan Ratliff in the show, told TV Insider on Tuesday,

Jason Isaacs did not say if he used a prosthetic penis while filming the full frontal nudity scene in 'The White Lotus' season three, but his on-screen children, Sam Nivola and Sarah Catherine Hook, confirmed that the penis was a prosthetic.