DELIGHTED mother Charlotte Kelly is seeing double again - after having her second set of identical twin girls.

In a 500,000-1 chance Charlotte, who isn't a twin herself, had a second double birth four years after her first.

It means life at home is going to be confusing for the 22-year-old mum.

It is already a struggle to tell her blonde daughters Jane and Jennifer apart. And now that Ruth and Emily have arrived, Charlotte is in a spin.

But the proud mum, from Shiney Row, near Sunderland, couldn't be happier.

"I'm absolutely over the moon," she said. "I've got four girls who are all perfectly healthy."

Charlotte was five months pregnant when she went for a routine scan and was told to prepare herself for another double birth.

"I honestly thought the nurse had got it wrong," she said. "I thought she must have been reading my records and got confused."

Emily and Ruth were delivered by Caesarean section when their mum was 38 weeks into her pregnancy.

They were born two minutes apart weighing 8lb 12oz and 7lb 2oz.

Big sisters Jane and Jennifer are thrilled with the new additions to their family: "When I told them I was pregnant they weren't too bothered, but when they found out I was having twins they thought it was fantastic because they can have a baby each," Charlotte said.

"The babies are so content and placid and the girls were ecstatic when they saw them - they just want to help all of the time. I come from a family of four girls myself, and I'm absolutely delighted to have four of my own."