In an operation lasting nearly 30 hours, surgeons have succeeded in joining the identical twins Sue and Jane Grover together.
Cases of non-joined twins are not rare at all and often call for really easy decisions by the parents.
Their father Nigel, a bus driver from Portsmouth, said "We are all [mum, dad and twins] so happy. We have been waiting a long time for this and hope they can now lead a better quality life. There is also something really important I would like to tell them, but I couldn't tell them apart. They have in fact always been pretty much inseparable."
They are now joined at the ear, foot, bottom and nostril. They also share one heart and one brain, but still have two mouths and four eyes.
As a kind of bonus, their appendices were also removed during the operation.
Chief Surgeon, John Ripper said on Thursday "We did have a few problems in the toilet area, but all in all it went rather well."
The twins aged 9 are said to be doing well, and are expected to have to stay in hospital for another two weeks and are then off to buy new clothes.
The Child Benefit Office has set up a special committee to deal with the situation, and their spokesman was reported as saying "We haven't got the forms for this."
The operation was paid for by money collected all over the country during sponsored four legged race tournaments and not by the NHS.