Like her brother, she has battled an addiction to prescription painkillers. But, in 2005 she spent time in a Californian clinic which helps young adults with mental health and drug addiction problems. Her mum Sharon said Kelly had a mental breakdown because of critiscm about her weight.
Less than a year later she was back in rehab. A spokesman said at the time: "Kelly is in a facility dealing with some personal issues."
Tools designed to ensure computer code in smart cars does not crash has been inspired by hungry penguins.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.