Photos; Siamese Twin Sisters Insist They Don't Want To Be Separated

• Pin and Pan have two heads, torsos, and arms but only have one leg each
• Have learned to walk on their hands and ride a tricycle as one
• Grandparents say they are happy girls who love to sing and eat ice cream
• Doctors raised possibility of separation but sisters want to stay joined

Many twin sisters are close, sharing everything from clothes to their innermost secrets.

But seven-year-old Pin and Pan are quite literally inseparable - as they are joined at the waist and share two legs between them, forcing them to walk around on their hands.

The conjoined twins, from Thailand, were born with their own heads, torsos, and arms but only have one limb each.

Pin has control of one leg and Pan controls the other, and the pair have learned to walk, dress, eat - and even ride a tricycle - as one.

Doctors have raised the possibility of the sisters being separated, but their bond is so strong that both twins say they want to stay joined together forever.

Conjoined twins are very rare, occurring around once in every 2.5 million births. 

The girls live in Nakhon Sawan, around 250km north of Bangkok, with their grandparents - who describe them as 'normal, happy' children.

'They love singing, eating ice cream, helping each other with dressing up and giggling together,' their grandmother, Noknoi Pongchumnan, said.

Pin and Pan have mastered the art of walking around crab-like on their hands and feet and can even climb two flights of stairs without help.

Doctors have raised the possibility of Pin and Pan being separated, but their bond is so strong that both twins say they want to stay joined together forever

The twins' teachers and grandparents hope that their education will give them the skills to live an independent life in the future.

'I would like Pin and Pan to get jobs, because they have the potential and ability,' says headteacher Sunan Japan.

The first time I saw them, it was a shock. I didn't expect my grandchildren to be conjoined

Pin and Pan's grandmother, Noknoi Pongchumnan

Their grandmother has high hopes for the twins too - she wants them to go to university and become doctors to help others with medical problems. 

'The first time I saw them, it was a shock. I didn't expect my grandchildren to be conjoined,' she said.

'She came back from the hospital crying,' the twins' grandfather, Sanay Rompoyen, added.

Rompoyen admits he felt pity for the twins for the first couple of months after they were born.

But now he says he is proud of his grandchildren - even if they can be naughty sometimes.

He added: 'They don't like being told what to do. If they want to do something, they will do it. They are very spontaneous and stubborn kids.'. Source; Daily Mail