Kevin Jonas, Nick Jonas, Joe Jonas, Jonas Brothers, 2010


Joe and Nick Jonas are going to be uncles, and they can't wait!

After the news of their brother Kevin and sister-in-law Danielle expecting their first child went public, the duo took to Twitter to express their joy and well wishes for the parents-to-be.

"Can't explain how excited I am about this. I'm going to be an uncle! Congrats @ & @!!" Joe wrote.

Meanwhile, Nick tweeted, "Can't wait to welcome the newest addition of the Jonas family. Congratulations to my bro @ & @."

Kevin also tweeted his thanks to the numerous fans who have congratulated him and his wife, saying, "I am overwhelmed! Thank you for all love for @daniellejonas and myself! We're so excite! ," while Dani wrote, "It's true! We r expecting. So excited to share this amazing news with all of you!..Iam so happy to tell everyone it's been so hard keeping this news in !!!" and also posted an adorable photo of blue and pink baby booties on Instagram.

The Married to Jonas stars exclusively revealed to E! News' Giuliana Rancic via Skype that Dani is pregnant with the couple's first baby.

"I was overjoyed," Kevin said upon learning about his wife's pregnancy. "It's been the most exciting thing in my life so far."

He added, "I'm excited and I'm nervous."

Tune in to E! News tonight at 7 p.m. & 11:30 p.m. for more from the soon-to-be parents!

PHOTOS: Kevin and Dani's baby will join the ranks of these cutest pop star babies!

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