(NSFW) CEO of Balenciaga's parent company owns an auction site selling child sex mannequins with erect penises, vaginas, and anuses instead of mouths or noses
Warning: Disturbing sexual images. All links are to legal websites (art galleries, art auctions, and YouTube)
François Pinault owns Kering, Balenciaga's parent company. He also owns Christies, an art auction site. If you search Jake & Dinos Chapman on Christie's, you will find numerous mannequins made by them which feature nude children with erect penises, vaginas, and anuses instead of their noses and mouths. https://www.christies.com/search?entry=JAKE%20AND%20DINOS%20CHAPMAN&page=1&sortby=relevance&tab=sold_lots
You will also find a VHS pornographic film where two pornographic actresses have sex with a severed adult male mannequin head with an erect penis for a nose.
https://www.christies.com/en/lot/lot-3117601
The pornographic film and mannequins were featured in a Channel 4 documentary which aired on British television: https://youtu.be/85xlZuZ0AbE?t=2584
Pinault owns some of the Chapman Brothers artwork, but there's no indication he owns the child mannequins:
Chapman Brothers offical art site: https://jakeanddinoschapman.com/exhibitions/the-francois-pinault-collection-a-post-pop-selection-palazzo-grazzi-venice/
Pinault's official art collection website: https://lesoeuvres.pinaultcollection.com/en/artist/jake-dinos-chapman
Pinault's Wikipedia states he is the founder of Group Artmeis, which owns Christie's
https://en.wikipedia.org/wiki/Fran%C3%A7ois_Pinault
https://en.wikipedia.org/wiki/Groupe_Art%C3%A9mis
https://en.wikipedia.org/wiki/Christie%27s
The fashion company Supreme also sold Skateboards featuring images of the child mannequins. https://jakeanddinoschapman.com/works/supreme-skateboards/ I'm not aware of any connection between this and Pinault and Balenciaga.
His son, François-Henri Pinault, is married to Salma Hayek.