Lisa Marie Presley shares devastating tribute to late son Benjamin Keough on his 28th birthday

Lisa Marie Presley is honouring her late son Benjamin Keough on what would have been his 28th birthday.

Presley, 52, who lost her son to suicide on July 12, posted a photo of Keough from a previous birthday with a heartbreaking message.

"My beautiful beautiful angel, I worshipped the ground you walked on, on this earth and now in Heaven," Presley wrote on Instagram. "My heart and soul went with you.The depth of the pain is suffocating and bottomless without you every moment of every day. I will never be the same."

READ MORE: Lisa Marie Presley's son Benjamin Keough dead at 27

Presley shared her son with her ex-husband Danny Keough, as well as their daughter Riley Keough, 31.

She is also the mother to 11-year-old twins Harper and Finley, who she shares with ex-husband Michael Lockwood.

"Please wait for me my love, and hold my hand while I stay to continue to protect and raise your little sisters and to be here for Riley," Presley continued in her birthday tribute. "I know you would want that. Happy Birthday my sweet sweet Boy. You were much too good for this world."

RELATED: Benjamin Keough's ex-girlfriend pens tribute in wake of his death: 'You were my favourite person'

Riley also paid tribute to her late brother on Instagram, with a slideshow of images from a 2015 wedding and throwbacks from their childhood.

"Happy Birthday beautiful angel," she captioned the photos.

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