Sheryl Crow Sings for 'Women Rule' Concert Series

Sheryl Crow has sold 25 million albums and is set to release a new album, "Wildflower," on Tuesday. But music isn't the only thing on Crow's mind -- she's planning a wedding.

Champion cyclist Lance Armstrong, who has won the Tour de France seven times, popped the question Aug. 31 when the two were vacationing in Sun Valley, Idaho. The couple met in 2003 at a charity event hosted by tennis star Andre Agassi.

Crow showed off her new engagement ring on "GMA."

"I use it sometimes as a flashlight," she joked. "Isn't it lovely? He did very well. He picked it out himself."

Fans packed New York City's Bryant Park this morning to hear the nine-time Grammy winner perform as "GMA" kicked off its "Women Rule" concert series. First, she sang "Good Is Good," the first single from "Wildflower." Next, she dedicated her performance of "Where Has All the Love Gone," also from "Wildflower," to the people of Texas and Louisiana. Her third and final song was her popular hit "All I Wanna Do."

Crow donated an autographed guitar to "GMA," which will be auctioned off so the proceeds can go to Robin Roberts' hometown of Pass Christian, Miss., which was devastated by Hurricane Katrina.