LOS ANGELES, Jan 30, (Agencies): Lionel Richie eagerly anticipates the arrival of his granddaughter, and he's already picked out a charming nickname for himself. The renowned singer and American Idol judge graced the premiere of his Netflix documentary, "The Greatest Night in Pop," where he shared insights into his daughter Sofia Richie's pregnancy journey with husband Elliot Grainge.

Expressing his joy, Lionel exclaimed, "My baby is having a baby, and I'm so thrilled for Elliot and Sophia. They are just over the moon." Sofia, 25, and Elliot, 30, recently unveiled their baby's gender through a TikTok video of a private backyard reveal, showcasing pink powder and confetti. Lionel, unaware of the video, humorously remarked, "You know, there is no secret with those two! I keep saying, 'Keep it a secret, OK?' But yes, that's what's happening. I'm so happy."

Looking forward to the adventure of being a grandfather, Lionel has a unique choice for his terms of endearment. "I'm Pop-pop," Lionel explained, dismissing the traditional "grandpa." "We don't get the 'grandpa,' yeah, that's a little deep. Pop-pop is where we're going."

Simultaneously, Lionel is gearing up for the release of his documentary, "The Greatest Night in Pop," which unveils the behind-the-scenes narrative of the iconic recording of "We Are the World," featuring a star-studded ensemble, highlighting the challenges and triumphs that almost led to its unraveling.