Stephen Baldwin Reveals That Daughter Hailey Bieber's Baby Jack Blues Is 'Incredibly Cute' (Exclusive)

Stephen Baldwin is one proud grandpa! Speaking exclusively to PEOPLE at the People + Chain 50th anniversary party at The Chain House in Los Angeles on Friday, Sept. 13, the actor and father of Hailey Bieber shared some details about his "incredibly cute" new grandson, Jack Blues Bieber, whom Hailey, 27, welcomed with husband Justin Bieber in August.