In sad news: The handsome socialite grandson of silver-screen goddess Rita Hayworth was found dead in an apparent suicide in his Chelsea apartment, law-enforcement sources said yesterday.



Andrew Embiricos — a troubled 25-year-old party boy who infamously starred in amateur Internet porn videos — was found lying face-up on his bed at around 8:30 p.m. Sunday with a plastic bag over his head, sources said.



His body was discovered by a pal, Aaron Edwards, 33, who had gone to the West 17th Street apartment after Embiricos had failed to show up for several appointments, sources said.



An autopsy performed by the medical examiner was inconclusive. Officials are awaiting a toxicology report. No suicide note was found, but law-enforcement sources said Embiricos had tried to kill himself before.



The dashing young man — who graduated from Fordham University with a degree in psychology — was the son of Hayworth’s daughter, Princess Yasmin Aga Khan (pictured with Embiricos), who lives off Central Park …