Billy Joel's daughter is speaking out in support of her father following his recent health diagnosis. Alexa Ray Joel - the daughter of the "Piano Man" and his ex-wife, model Christie Brinkley - took to social media on Sunday (May 25) to thank fans for their support and share an uplifting message after her father revealed he had been diagnosed with normal pressure hydrocephalus (NPH),

Alexa Ray Joel, the daughter of Billy Joel and Christie Brinkley, posted a message on Instagram on Saturday thanking people for "the beautiful outpouring of love and support" following her father’s announcement that he’d been diagnosed with a rare brain condition.

Last week, the 76-year-old musician announced that he was diagnosed with the rare brain condition and had to cancel the remainder of his tour.