With Kevin Jonas expecting a baby with wife Danielle Jonas, his little brothers, Joe and Nick, tell Us Weekly how excited they are to be uncles and welcome a little nephew or niece to their growing family. Credit: Rachel Kaplan

Brotherly love! With Kevin Jonas and his wife Danielle Jonas expecting their first baby, Kevin's brothers, Joe and Nick, said they can't wait to become uncles during a chat with Us Weekly on Thursday, July 25.

"[We're] very excited," Joe, 23, said at Z100's Clear Channel radio studios in New York City. "I think this is a good time for adding a new member of the family. And you obviously don’t really know what to expect until he or she is actually here but then it will all kind of sink in. You just talk about it, but when we’re actually able to hold that baby, our niece or nephew, that will be exciting."

Nick, 20, is especially happy for the future baby to wear a fan-given bib that has a special, forthcoming, message on it: "My uncle is hot! And single!"

"I thought that was great," dad-to-be Kevin laughed.

While the "First Time" singers work on their upcoming album, due this fall, 25-year-old Kevin shared that Danielle hasn't suffered any severe morning sickness thus far. (The couple, married since 2009, announced they were expecting Tuesday, July 9.)

"She's good! You know, the first trimester is always an interesting one," he explained. "She's been feeling up and down a lot. But she's doing a lot better now. We're in good spirits."

During the interview, he also revealed that 25-year-old Danielle, a former hairdresser, was possibly finding out if the baby is a boy or a girl at a doctor's appointment. They're not sure when -- or if -- they'll reveal the gender news. "We’ll see," he explained. 

With Kevin busy in the studio, Danielle who stars in E's Married to Jonas, is busy decorating the nursery for their new bundle of joy. "She’s really taken care of all of that," he shared. "I’m really excited about everything and want to help out as much as possible, obviously. But, you know, we’re here on the road working a lot. But I’m just really excited! It’s such a good time."

Seeing how many JoBro fans are just as excited about the baby, he says the outpouring of support has warmed he and Dani's hearts. "We're getting so many gifts from the fans," he said. "We've been collecting them in each city and I have an entire area in one of the buses just filled with boxes of gifts from these fans."