After introducing her to the crowd as his girlfriend, White then presented a ring and asked her to marry him.
The engagement was brief, as a small group — including White’s mother, Jean’s father and an officiant — quickly gathered on stage to make the marriage official.
With the wedding complete, White resumed performing and finished the 90-minute concert.
This is White’s third marriage. He was previously married to Meg White of The White Stripes and model and singer Karen Elson.
Source: Jack White surprises fans by turning Detroit show into his wedding