Joe Jonas has nothing but love for his 5-month-old niece, Valentina. On Sunday, the DNCE frontman enjoyed some family bonding when he attended a dedication ceremony for the daughter of his brother Kevin and sister-in-law Danielle. "My little niece Valentina. dead. 😍," he captioned a precious selfie of him with the little girl. His younger brother Nick also shared a few photos from the event on Snapchat, announcing that he's now her proud godfather. This certainly isn't the first time the two have gotten into uncle mode. The brothers have been known to share numerous snaps with Kevin and Danielle's 3-year-old daughter, Alena, as well.