If you thought the likelihood of having twins was slim (about one in 250), then the chance of two siblings both giving birth to twins would be improbable in the extreme - let alone within weeks of each other. However, that is exactly what happened to sisters Megan O'Brien, 29, and Sara Seyler, 32, who both gave birth to identical twin girls within the last year.
Younger sister Megan had Lilah and Josie just three months before Sara followed suit and gave birth to Lennon and Parker. The double pregnancies came as a complete surprise to both women, as twins do not run in the family at all.
Although Megan’s husband, Matt, is a triplet, there was no indication Megan would give birth to twins, never mind her sister Sarah too. Remembering the moment she discovered her sister would be having twins as well, Megan said: "My jaw dropped.