Billy Ray Cyrus' son is sharing concern for his father's wellbeing. In an Instagram post Wednesday, Trace Cyrus, the 35-year-old brother of Miley Cyrus and son of Billy Ray Cyrus, wrote a message addressed to his dad and said that he is worried about him.

The country singer's son wrote a heartfelt open letter on Instagram after that viral inauguration performance: "You’re not healthy Dad and everyone is noticing it."

Billy Ray Cyrus' son Trace says he and sisters Miley and Noah are 'genuinely worried' for their country singer dad. 'You've pushed all of us away,' he writes.