Gender-bending male model Andrej Pejic acknowledged Tuesday he's the svelte blond "woman" featured in a Dutch advertising campaign for push-up bras.

"Did I ever think I had enough booty to advertise a push-up bra? No. But am I working it or what??" the Bosnia-born Australian - a runway favorite of Jean Paul Gaultier and Marc Jacobs - said on his Twitter account.

Pejic, 20, is credited by name in advertisements for a 20 euro (S$34) "mega push-up bra" from Dutch department store chain Hema in which he otherwise looks like a young blond woman in a figure-hugging black and red dresses.

"Pejic looks very pretty in the pictures," said New York magazine on its fashion blog, which nevertheless predicted "a new round of opinion pieces" over whether fashion designers only care to create women's wear for boyish bodies.

With his head-turning androgynous looks, Pejic has been an international runway star this year, notably closing Gaultier's haute couture show in Paris in a wedding dress. He models menswear as well.

With a slender figure, flowing blonde hair, and a face that boasts full, pillow lips and high cheekbones, Pejic, who has Eastern European roots, has been exciting the fashion designers and editors since first appearing on the runways of London, Paris and Tokyo.

Despite being a male model, but he has been termed 'beautiful', with looks that are reminiscent of a cross between Kate Moss and Cindy Crawford.