American Idol runner-up Crystal Bowersox is engaged! To Brian Walker!

The singer and her fiance plan to tie the knot next month, her rep says.

It's the first marriage for Bowersox, 25, who also has a son, Tony, 18 months, from a previous relationship. Bowersox is currently recording her debut album.

Definitely cause for a thumbs-up!

Her love life has been fast-tracked almost as much as her singing career. Her now-ex, Tony Kusian, broke up with her just before the American Idol finale.

She said the split was mutual but that she drew on emotion while singing a moving rendition of Patty Griffin's "Up to the Mountain." Up she went, indeed.

Congratulations to Crystal and Brian on this wonderful news!