Extraordinary story of conjoined twins

Extraordinary bond: Conjoined twins Abigail and Brittany Hensel have been given their own reality TV show charting their graduation and travels through Europe.(Photo/XPUSJP)

Astonishing development: The 22-year-olds, who share one body, graduated from Bethel University in Minnesota, a story that will form part of the show.(Photo/XPUSJP)

Feat of teamwork: The girls passed their driving test on their 16th birthday, with each twin using one arm to control the steering wheel.(Photo/XPUSJP)

Remarkable: The girls have two spines, two hearts, two oesophagi, two stomachs, three kidneys, two gall bladders, four lungs, one liver, one ribcage, a shared circulatory system and partially shared nervous systems.(Photo/XPUSJP)

Much-loved: The girls attended a private church school and are popular with their friends, who treat them no differently from anyone else.(Photo/XPUSJP)

One in a trillion: The Hensels are believed to be one of only a few sets of dicephalus twins in history to survive infancy.(Photo/XPUSJP)

They were never expected to survive beyond a few days.

But conjoined twins Abigail and Brittany Hensel have not only proved doctors wrong, they have astonished them with their development into darling children, typical teenagers and, lately, beautiful young adults.

Now the 22-year-olds, who share one body fused at the torso, will be starring in their own reality TV show chronicling their graduation from Bethel University in Minnesota, their post-grad job search and their travels through Europe with friends.