This as-told-to essay is based on a conversation with Sarah Charlwood. It has been edited for length and clarity. Throughout my life, people have been fascinated by the fact that I'm an identical twin ...

Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

Are you a twin? Is your twin relationship an essential part of who you are? Have you and your twin struggled with your relationship? If you answered “yes” to any of these questions, then we are ...

Gabrielle Taylor’s viral TikTok on how doctors told her identical twins apart before birth has every parent of multiples relating Ashley Vega is a writer-reporter at PEOPLE. She has been working at ...

Jessica Dunagan and Christina Manning shared their relationship trouble on TLC's "Extreme Sisters" when they clashed over who would attend a home birth.

For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical twins—those born with the same genetic blueprint—have long been the perfect ...

Sarah and Aimee Charlwood from Brisbane, Australia, are identical twins. They didn't spend a day apart from when they were born until they were 16 years old. Eerie coincidences happen to them, but ...