A set of Dicephalus Twins, Abigail and Brittany Hensel are born in 1990 in Minnesota. This is an extremely rare type of conjoined twins that has believed to resulted in live births only four times. Today, the two sisters share one body with two heads and are perfectly normal young girls who love to swim, play baseball and other sports. They share one liver, bladder, intestines and reproductive organs but have distinct nervous systems. The two have been featured on numerous TV shows (including 'Joined at Birth' on the Discovery Channel) and Time and Life Magazine.

A similar pair of Dicephalus Twins, Eilish and Katie Holton of Ireland, are attempted to be separated in 1992 at age three at the Great Ormond Street Children's Hospital in London. The Holton twins were born with four arms (the Hensels had a third arm removed from their forehead as infants) and undergo a 15-hour operation under the care of 25 doctors. Katie dies of heart problems four days after surgery, Eilish survives and now uses an artificial leg to move around.

We're not sure of their birth date, but we believe that conjoined twin sisters, Gita and Zita, are born in Kirgistan in Central Asia around 1992. As detailed in a German magazine, the twin girls were 10 years old in 2002 and are currently living in a hospital in Munich where doctors hope one day to be able to separate the pair who are connected at the abdomen and share many internal organs.

Texas Children's Hospital in Houston, the same hospital that provided medical care for the world's first surviving octuplets in 1998, successfully separates Beaumont, Texas twins Tiesha and Iesha Turner on June 9, 1992. The girls were born joined at the chest and abdomen on April 19, 1991. A story on the five-year anniversary of their separation surgery reported that TCH had seen 11 sets of conjoined twins since 1964 with three successful separations.

A rare set of triplets with a conjoined twin set is born in Pakistan on October 8, 1992, Nida, Hira and Fariel Jamal. The twins, Nida and Hira are joined at the head and brought to the United States to be separated in 1995. The surgery is initially thought to be successful but tragically Nida does not survive.

On August 20, 1993, conjoined two-month old sisters Amy and Angela Lakeburg of Indiana are medically separated in a Philadelphia surgery in which it is decided that the weaker Amy will be allowed to die so Angela be given a chance to survive. The two twins, who share just one heart and liver, grip the heart of the United States, but tragically Angela dies less than a year later as well. Later stories reveal the sad news that the Lakeburg's father sold video rights to the twins separation surgery and used that money to purchase drugs.

The danger of infection among internal organs in conjoined twins is unfortunately shown in a set of twins in England as Chloe and Nicole Astbury succomb to an infection in 1996 despite doctor's efforts to save the pair. The two girls were born joined together at the breastbone and shared a liver and bowel.

The Loma Linda University Children's Hospital in Loma Linda, California performs its first successful separation, separating Shawna Leilani and Janelle Kiana Roderick on May 31, 1996, 30 days after the Prescott, Arizona family delivers the twins. The lead doctor in the surgery was Dr. Gibbs Andrews, who had been involved in two prior separations. The separated girls come through the operation with flying colors. The shows 'Joined at Birth' and 'MSNBC Investigates: Conjoined Twins' profile the Roderick family.

Weronika and Wiktoria Palen, joined at the chest and abdomen, were successfully separated by a 12-person surgical team at The Children's Hospital of Philadelphia in 1999. Both girls are doing well and have returned to their home in Poland.

A rare type of conjoined twins are born in February, 1998 at the Loma Linda University Medical Center near Los Angeles, California with the birth of Gabrielle and Micheala Garcia, a pair of parapagus twins with just two legs between them. The girls are separated at eight months, which is extremely rare in cases of conjoined twins with just two legs.

Another never-before seen type of conjoined twins happens in Boston, Massachusetts in 1999 with the birth of the Soto Twins from Puerto Rico. The two girls share one heart with the healthier twin, Darielis, pumping blood through the umbiblical cord to her sister. It is decided to separate the babies immediately following their birth (if doctors had cut the umbiblical cord both babies would have died), and Darielis survives the Children's Hospital of Boston surgery and is a healthy little girl living in New Jersey today. As expected, Darielis' sister does not survive the surgery.

A pair of conjoined twin boys are born on Halloween, October 31, 1999 in Lima, Peru, Luis Angel and Luis Aberto Patiņo-Quispe. The twins are cared for initially in Peru and then brought to Miami Children's Hospital in the United States for successful separation surgery in September, 2000.

Esther Alphonce and her twin sister, Stella, are born in Tanzania in November, 1999. The girls are successfully separated a year later but remain in poor health. Esther sadly passes away on February 22, 2003 of pneumonia and anemia due to malnutrition and poor medical care.