Lady Cilento Children's Hospital

The world's highest paid celebrity talked to and took photos with patients at the South Brisbane hospital on Tuesday afternoon.

"Thank you Taylor Swift for dropping by the Lady Cilento Children's Hospital to give our patients and families a special surprise they'll never forget," the hospital wrote on Facebook.

"They'll never 'shake off' the memories you made."

While a spokeswoman for Immigration Minister Peter Dutton said nothing has changed and the Department was still negotiating with the hospital about one-year-old baby Asha, refugee advocates said the girl's mother was told their relocation was imminent.

Baby Asha was being treated in Brisbane for injuries after she was accidentally burnt by boiling water in a tent on Nauru in January.

Doctors at the hospital have refused to release her until a suitable home environment is found.