Wednesday, Aug. 16, marks the 40th anniversary of Elvis' death at age 42, and fans from around the world have been paying tribute to the King of Rock 'n' Roll, along with his family members.

Elvis' daughter, Lisa Marie Presley, took her 8-year-old twin daughters, Harper and Finley Lockwood, and her 24-year-old son, Benjamin Keough, to Graceland -- the former home of Elvis -- to pay tribute to the late singer at a candlelight vigil with fans. Lisa Marie, 49, wore a crimson satin dress, while her twins were dressed in similar white and pink dresses. Her son wore a black blazer and jeans, along with a tan shirt and boots.

...on the 40th anniversary of his death

Lisa Marie Presley had the love of family, friends and fans as she honored her father Elvis ahead of the 40th anniversary of his death. The actress was joined by her eight-year-old twin daughters, Harper and Finley Lockwood and her 24-year-old son Benjamin Keough during a candlelight vigil held at Elvis’ former home, Graceland in Memphis, Tennessee on Tuesday, August 15.

Lisa Marie, 49, stood with fans during a candlelight vigil, that took place on day five of Elvis week and went into the early morning hours of August 16 – the day the singer passed after a heart attack in 1977. Lisa’s mother and the Hound Dog singer’s wife Priscilla Presley spoke to the crowd and expressed her gratitude for keeping the King of Rock n’ Roll’s legacy alive. On Wednesday, Priscilla took to Twitter to post photos of her and Lisa Marie from Elvis’ funeral with the caption, “Mourning.”

She seems detached—and she probably is, not just 10 feet but a million miles away from the games going on around her, not to mention the tragedy.

She is also divergent. Born both a Southern girl and celebrity, her (perhaps healthy?) detachment from the world reflects, it would seem, having learned a lifetime’s worth of lessons from her father’s tragic life. She’s probably feeling burned too. She left the Church of Scientology or so we hear—and Lisa revealed the bitterness, even if nascent, in the song from Storm and Grace “So Long.”

Maybe it’s just being Lisa Marie, daughter of the rock and roll king, once wife to the king of pop, with the height of superstardom and the depth of crushing deaths. She probably died and came back numb? Or, as she says, she likes to keep things “compartmentalized.” Here’s the fame part, here’s the mom part. By fate and fortune to become the only child of a mega icon, being a rock star in her veins and in her own right, Lisa Marie has had an escapade of a life.