Rocker Zac Hanson's wife, Kate is pregnant with the pair’s first child.Zac has revealed the 11th member of the Hanson clan will be due in May (08). The 22-year-old says, "I am utterly thrilled at the thought of becoming a father. I can't wait to meet this person." Kate adds, "This is the most amazing time for us. It's the most romantic thing we've ever done."The new addition will join Zac's four nieces and nephews - the children of his older band mates Taylor and Isaac.He adds, "It will be really fun to see five little ones grow up together. I know watching them is going to inspire a lot of music."