Joseph LlanesUPDATE: The girls have been named Finley and Harper, E! News has learned.
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Lisa Marie Presley has doubled her pleasure.
The rock 'n' roll progeny and her hubby, Michael Lockwood, celebrated the arrival of twin girls this week.
Per Presley's publicist, Cindy Guagenti, the twosome arrived at 2:46 p.m. Tuesday via C-section, weighing in at 5 pounds, 15 ounces and 5 pounds, 2 ounces, respectively. The children's names have not been announced.
Mother and daughters are said to be "happy and healthy" and now resting at home.
The children are the first together for the 40-year-old Presley and 47-year-old Lockwood, her fourth husband, a guitarist and music producer whom she married in Japan in 2006.
Elvis' daughter has two children from her first marriage to musician Danny Keough, 19-year-old Danielle Riley, and 15-year-old Benjamin Storm.
Presley confirmed her pregnancy last March after Britain's Daily Mail newspaper published unflattering photos of the singer and a caption suggesting she may have inherited her father's famous appetite.
After the singer filed a libel suit, the tabloid subsequently issued an apology "for any distress caused."