• BREAKING NEWS ABC shows live and on-demand -- Download the WATCH ABC app!

OTRC: Kevin Jonas, Danielle Jonas expecting first child, #BABYJONAS trends

Ryan Seacrest and Dani Jonas and Kevin Jonas of 'Married to Jonas' attend the E! Entertainment Television's 2012 Upfront presentation at NYC Gotham Hall on Monday, April 30, 2012. (Larry Busacca / E! Entertainment)

Get ready for another Jonas.

Kevin Jonas, the eldest singer of the popular group the Jonas Brothers, and his wife Danielle, his co-star on the E! reality series "Married To Jonas," are expecting their first child. News about the couple's upcoming arrival caused "#BABYJONAS" to trend on Twitter.

"@daniellejonas & I feel so blessed to be parents-to-be," Jonas, 25, tweeted on Tuesday, July 9 to his some 3.3 million Twitter followers. "Happy 2 be sharing this news!"

"I am so happy to tell everyone," his wife, 25, added. "It's been so hard keeping this news in !!!"

Joe and Nick, Jonas' younger brothers, Jonas Brothers members and former Disney Channel co-stars, also tweeted their responses to the news.

"Can't explain how excited I am about this. I'm going to be an uncle! Congrats @kevinjonas & @daniellejonas!!" said Joe, who is 23 and has more than 5.8 million followers on Twitter.

"Can't wait to welcome the newest addition of the Jonas family," Nick, 20, tweeted to his some 6.6 million Twitter followers. "Congratulations to my bro @kevinjonas & @daniellejonas."

Jonas and Danielle wed in 2009. "Married to Jonas" premiered in August 2012. Its second season aired earlier this year.

(Copyright ©2018 OnTheRedCarpet.com. All Rights Reserved.)