Peter Brant Jr., 27, pays memorial to late brother Harry following model's ...

Peter Brant Jr. paid memorial to his late brother Harry on Thursday.

'Today we lay to rest, and honor the life of my brother, a true angel of light, an extraordinarily unique soul unlike any who have come before,' Peter, 27, said in an Instagram alongside a shot of Harry taken Sunday with model Gaia Matisse, prior to the accidental drug overdose that killed him at 24.

In the photo, Harry and Matisse relaxed in maroon velvet outfits atop a large floral rug. Peter said of the image, 'This photo taken on his last day, shows the eternal he will forever hold.'

The latest: Peter Brant Jr. paid memorial to his late brother Harry on Thursday following the accidental drug overdose Sunday that killed Harry at 24. The brothers were snapped in NYC in 2015

The latest: Peter Brant Jr. paid memorial to his late brother Harry on Thursday following the accidental drug overdose Sunday that killed Harry at 24. The brothers were snapped in NYC in 2015 

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The model opened up about his mourning for his brother and the close relationship they shared. 

'It is impossible to express the devastation I feel for the loss of one with whom I shared not only a lifetime of beautiful memories, but with one who cared so deeply for my own happiness, was so devoted to my personal comfort,' Peter wrote. 'It is the loss not only of a brother, but of a best friend, my other half. 

He concluded, saying, My heart shatters to think we will never see that dear sweet face again.' 

Harry Brant's family says he 'was just days away from re-entering rehab' prior to the model and influencer's deadly accidental drug overdose at 24 Sunday. 

Moving: In his post, Peter posted a pic of Harry and model Gaia Matisse relaxed in maroon velvet outfits atop a large floral rug the day of Harry's death

Moving: In his post, Peter posted a pic of Harry and model Gaia Matisse relaxed in maroon velvet outfits atop a large floral rug the day of Harry's death

Tragic: Stephanie Seymour's son Harry Brant 'was just days away from re-entering rehab' prior to the model and influencer's deadly accidental drug overdose at 24 Sunday, his family said

Tragic: Stephanie Seymour's son Harry Brant 'was just days away from re-entering rehab' prior to the model and influencer's deadly accidental drug overdose at 24 Sunday, his family said

Cherished memories: Peter shared a framed shot of himself posed with his late brother

Cherished memories: Peter shared a framed shot of himself posed with his late brother 

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The son of model Stephanie Seymour and industrialist Peter M. Brant stated Monday, 'It is with enormous sorrow that we share with you the news that our beloved son,

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