Kevin and Danielle Jonas are expecting their second child together! The couple announced the happy news in a sweet Instagram back in April, and on Monday, they finally revealed the sex of their baby. In a sweet photo featuring their little girl, Alena Rose, holding up a giant heart-shaped balloon, Kevin excitedly wrote, "We're having a GIRL!!!!!!!!" The two have been married since 2009, and in February 2014, they welcomed their first child together. See the cute snap below, and then check out their sweetest family moments over the years.