Anna Lillian Iversen's death was confirmed by her daughter and great granddaughter in tributes posted to Instagram.
The singer-songwriter, 53, has been largely out of the spotlight after the death of son Benjamin Keough last year.
Lisa Marie Presley marked her 53rd birthday on Monday — the first since the death of son Benjamin Keough.
Riley told her Instagram followers of the “true heartbreak” she feels at losing her “baby brother”.
Cue tired puns about ‘very blue suede shoes’ and leaving viewers ‘all shook up’. Elvis Presley’s granddaughter has stripped for her role as a hooker in a new TV sex drama. The Girlfriend Experience is based on Steven Soderbergh’s 2009 film of the same name.
In 2009, Steven Soderbergh directed experimental film The Girlfriend Experience starring adult film actress Sasha Grey as Christine aka Chelsea. Christine is an escort whose specialty is offering clients “the girlfriend experience” – an encounter in which there is pretence of emotional intimacy. Last night, Starz’s 13-episode TV series of the same name (featuring Soderbergh as an executive producer) became available to watch via the network’s On Demand service.