Abbey Clancy's sister Elle Clancy's mystery health condition threatened her modelling career as she drastically gained weight and lost her hair

Abbey Clancy's sister Elle Clancy suffered with a mystery illness that nearly ruined her career[WireImage]Abbey Clancy’s younger sister Elle Clancy feared her modelling career would be over after she discovered she had a mystery illness. The 18-year-old model thought her dreams of having a successful position in the fashion business like the Britain's Next Top Model judge – who has Sophia, Liberty and Johnny with her husband Peter Crouch – would be shattered when she