The singing legend's 19-year-old daughter made her relationship with 34-year-old Disick public last month, having been spotted together getting cosy by the poolside in Miami before being clicked earlier this week in Puerto Vallarta in Mexico.
"Have I been in shock?! I'm the dad, come on," Richie told Us Weekly at the "American Idol" auditions.
"I'm scared to death, are you kidding me?" he added.
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