Ariana Grande has revealed her grandmother - affectionately known as Nonna Marjorie - has died aged 99. The Wicked star took to Instagram to announce the heartbreaking news, sharing a post from her mom: 'We are devastated to share that the beloved matriarch of our family has passed away. Read the full story on DailyMail.com #arianagrande #grandmother #nonna #news #usa #rip