Top Model contender Rosanagh Wypych is still in the running for this week's final despite posting pictures depicting alcohol use and what appears to be drugs on Facebook.
Several photos on her page showed Rosanagh with friends who were drinking alcohol, while one photo showed the 17-year-old looking on while another girl holds what may be cannabis.
In response to the comment: "great look for a top model'', Rosanagh replied: "not me smoking it''.
The pictures are available to her 3800 Facebook friends and anyone with a mutual friend.
TV3 said it would not comment on a private Facebook page but Mediaworks spokeswoman Rachel Lorimer said the network "takes its responsibilities towards younger viewers seriously'' and did not condone illegal behaviour.