Christie Brinkley, Billy Joel's ex-wife, has spoken out about his diagnosis of normal pressure hydrocephalus (NPH).
The 71-year-old American model paid tribute to the 76-year-old singer-songwriter and pianist on Instagram, uploading a video of herself and her daughter, Sailor Brinkley Cook, attending one of Joel's concerts.
Brinkley captioned her image, "Dear Billy. The entire Brinkley family is sending you loads of love and best wishes for a complete and rapid recovery."