H&M has admitted that the bikini models in its ads are just real models' heads pasted onto a computer-generated "ideal" body. As Jezebel notes, "But man, isn't looking at the four identical bodies with different heads so uncanny?"
The bodies of most of the models H&M features on its website are computer-generated and "completely virtual," the company has admitted. H&M designs a body that can better display clothes made for humans than humans can, then "dresses" it by drawing on its clothes, and digitally pastes on the heads of real women in post-production.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.