Canada's Miss World contender, Anastasia Lin, has revealed that she was barred from boarding a plane from Hong Kong to the Chinese city, hosting this year's pageant.
Ms Lin, 25, who is a chinese-born, says she did not receive an invitation to attend the event, which meant she could not apply for a visa but her attempt to travel to Sanya, via Hong Kong, as Canadian tourists are eligible for visas on arrival could not yield any results.
Ms Lin has blamed the apparent ban on her human rights campaigning and has criticised the "repressions and censorship" in China.
When Ms Lin first made her claim that she was not sent an invitation to attend, the BBC tried to get in touch with Miss World authorities, but received no response.
Canadian newspaper The Globe and Mail quoted a statement from the Chinese embassy in Ottawa that "China does not allow any persona non grata to come to China", in response to a query on Ms Lin's status.
"They are trying to punish me for my beliefs and prevent me from speaking out about human rights issues."
The Miss World tournament is due to happen in the seaside resort of Sanya on 19 December.