“Behind the Blue Door,” a lavishly photographed book detailing the more-is-more maximalism of John Demsey’s Latest York City townhouse, officially goes on sale next Tuesday, and to have fun, he’s throwing open the aforementioned doors for a cocktail party Wednesday night. 

Demsey, a former executive with the Estée Lauder Cos. who helped make MAC and Tom Ford global powerhouses, is understood for his vast collections — of photography, clothing, knick-knacks, art, watches, accessories, even animals. (He shares the home with eight dogs and two cats, in addition to his teenage daughter.)

The book, written by Demsey’s close friend Alina Cho and photographed by Douglas Friedman, takes an in-depth have a look at all five floors, chapter by chapter — from the kitchen, where every inch is roofed with Fornasetti plates — to the third floor closets where Demsey’s tons of of shirts are housed, arrayed by color and stripe pattern, to the fifth floor’s homage to Andy Warhol’s Factory.

Expected to attend Wednesday night’s event: artist Ruan Hoffmann (Demsey exhibits scores of his plates across myriad floors), Moda Operandi’s Lauren Santo Domingo, Kelly Ripa and Mark Consuelos, and designers including June Ambrose, Francisco Costa and Dennis Basso.

For Demsey, who was forced to retire from Lauder in 2022 after a controversial Instagram post, the book marks the opening of one other latest door, too. Earlier this 12 months, he joined L Catterton as a senior adviser.

“Recently I even have learned that doors sometimes close, but there’s at all times one other that opens,” he writes within the foreword of “Behind the Blue Door.” “Behind every door, every room, every object, there’s one other story, one other world to be discovered.”

“Behind the Blue Door,” $65, Vendome Press.