A Scottish woman has given birth to her third set of twins. Karen Rodger, 41, and her husband Colin, 44, from Langbank in Renfrewshire delivered by caesarean section two girls — Rowan and Isla — who were born about two minutes apart.

The Rodgers have two other sets of twins, all boys, and with this latest set has defied the odds of 500,000 to one of delivering a third set.

BLOG: Twins Born 87 Days Apart

Mrs. Rodger told Sky News, “I just could not believe it. It never crossed my mind that it would be twins again, I just thought that just doesn't happen to people like me but I'm absolutely delighted."

Although the odds are high of delivering three sets of twins, it has been done before. According to Guinness World Record, “The first wife (died ante 1770) of Feodor Vassilyev (b. 1707 – c.1782), a peasant from Shuya, Russia, gave birth to 16 sets of twins. Barbara Zulu of Barberton, South Africa bore 3 sets of girls and 3 mixed sets in seven years (1967 – 73)."

And earlier this year, a woman in Houston gave birth to two sets of identical twins in one day — February 14, Valentine's Day. Amazing!

Credit: Meeke/Corbis