Kelly Ripa is one proud aunt! The Live with Kelly and Ryan star shared some exciting news about her nephew, Sergio Giuseppe Ripa, on Monday – and it's clear she was giddy with glee.The TV star posted a photo of the 21-year-old alongside singer Steph Amoroso, revealing the aspiring musician had accompanied her on the guitar for a recent gig.MORE: Happy news for Kelly Ripa following wedding anniversary celebrations"My super talented guitar playing nephew @maanbarepiig accompanied the super duper