Demi Moore took to social media to share how she handles her grandma’s duties. The star and businesswoman showed fans her Mother’s Day celebration, which included hanging out with her newborn granddaughter while spending time by the pool.The baby belongs to the star’s daughter, Rumer Willis, whom she shares with her ex-husband, Bruce Willis. The black and white snap features baby Louetta, born on April 18 to the 34-year-old star and boyfriend, Derek Richard Thomas.