we think of fraternal or identical pairs. But did you know that there are many other types and subtypes of twins, including mirror twins, conjoined twins, and even semi-identical twins?

PREGNANT Jesy Nelson has revealed she is facing a serious health scare which has left her needing two scans a week on her unborn twins. The former Little Mix singer, 34, took to Instagram today ...

Their remarkable journey began when Liliya discovered she was carrying conjoined twins at her 11-week scan. Doctors couldn’t say if separation would ever be possible. “Running from one ...

She has been working in journalism for seven years. @brandeebestphotography A pair of formerly conjoined twins recently celebrated their very first birthday! Ella and Eliza Fuller were born ...

Twins Sydney and Lexi were conjoined at birth and separated seven months later in a risky surgery, but are now thriving at age 17 Julie Mazziotta is the Senior Sports Editor at PEOPLE, covering ...

George Schappell, the world's oldest-living conjoined twin, came out as a transgender man, revealing this to his sister Lori after decades. Born conjoined at the head in 1961, the twins lived ...

Conjoined fetuses are a rare type of identical twins that share a placenta and an amniotic sac, when the embryo divides at 13-15 days from conception. The incidence ranges from 1/50,000-1/100,000 ...