Conjoined twins Conjoined twins Conjoined twins are identical twins joined "in utero". An extremely rare phenomenon, the occurrence is estimated to range from 1 in 49,000 births to 1 in 189,000 births, with a somewhat higher incidence in Southwest Asia and Africa. Approximately half are stillborn, and an additional one-third die within 24 hours. Most live births are female, with a ratio of 3:1. Two contradicting theories exist to explain the origins of conjoined twins. The more generally accepted theory is "fission", in which the fertilized egg splits partially. The other theory, no longer believed to be the basis of conjoined twinning,
Barbi Twins been searching for him since 2008. Their search remained ongoing as of 2014. Barbi Twins Shane and Sia Barbi (born April 2, 1963), popularly known as The Barbi Twins, are identical twins, cover models, co-authors, and spokespersons for animal rights advocacy. Shane and Sia began modeling at the age of seven when they posed for a layout in the Sears mail-order catalog. As adults, their career has included fashion and mainly pin-up modeling. The "Los Angeles Times" did a cover story about the Barbi Twins when their billboard went up on Sunset Boulevard in 1989 immediately catapulting them to worldwide