John Prine

There's plenty of closet space, that's for sure!

The memento dates back to 2009, when Lambert covered Prine's "That's the Way That the World Goes 'Round."

She made the song her own.

Farewell to a true legend.

Prine is "very ill," and has contracted pneumonia, but his family is holding out hope.

According to a statement from his family, "his situation is critical."

There are many -- too many -- country stars who have had cancer or have been personally affected by it in some way.