Zac Hanson, the youngest member of the Hanson brother's boy band, announced to People magazine that he and his wife are expecting their first child together this May.

Zac, 22, is not the first Hanson brother to become a father, his middle brother Taylor has three children, and oldest brother Isaac has one child.

Hanson met wife Kate Tucker, 23, in 2001 and after four years of dating he popped the question and the two were married in Atlanta, Georgia in June 2006.

"I am utterly thrilled at the thought of becoming a father," said Hanson, and wife Kate added, "I can't wait to meet this person. This is the most amazing time for us. It's the most romantic thing we've ever done."

Hanson is currently touring to promote their new album "The Walk," and each Hanson brother brings their entire family on the tour bus with them.

"It will be really fun to see five little ones grow up together," says Hanson. "I know watching them is going to inspire a lot of music."