Surgeons in Melbourne say Trishna, one of the Bangladeshi conjoined twins separated this week, has woken and enjoyed a cuddle from her Australian legal guardian Moira Kelly.
The three-year-old girls were separated on Tuesday at Melbourne's Royal Children's Hospital.
Medics say both have pulled through the marathon 32-hour operation amazingly well.
The director of neurosurgery at the hospital, Wirginia Maixner, says her sister, Krishna, would be woken on Thursday night.
She says her brain scan shows no significant damage, but says there is still a considerable journey ahead for both girls.
Listen to Melbourne journalist Grant McArthur