Demi Moore<\/a> joined her daughters, Scout<\/a> and Tallulah Willis<\/a>, this week to celebrate the milestone 90th birthday of Bruce Willis<\/a>\u2018 mother, Marlene Willis, who marked the special occasion with a family get-together.<\/p>\n Taking to her Instagram page, Tallulah shared photos from the party at Il Pastaio, an Italian restaurant in Beverly Hills. The pictures showed Marlene in a birthday sash and tiara, while Moore cuddled up with her ex-mother-in-law, holding her dog, Pilaf.<\/p>\n \u201cMy glamour-puss queen of a grandmother turns 90,\u201d Tallulah wrote in the post\u2019s caption. \u201cI love you, thank you for being such a furnace of love for me always Gram\u2026 thank you for the best most supple skin in the game and my deep everlasting obsession for diamonds and gemstones!<\/p>\n \ufffd\ufffd<\/p>\n<\/figcaption><\/figure>\n \ufffd\ufffd<\/p>\n<\/figcaption><\/figure>\n and forever shout out to my girlies @demimoore & @pilaf.littlemouse.\u201d<\/p>\n Scout also shared photos from the event on her own Instagram page, alongside throwback pics with her grandma. \u201cEveryone say HAPPY 90TH BIRTHDAY to my glamorous, tough, resilient, Beautiful Gram!\u201d she wrote.<\/p>\n Moore and Bruce were married from 1987 to 2000 and share three daughters, Rumer, Scout, and Tallulah. Despite the separation, the pair remain close, and Moore has been a consistent presence amid the Die Hard<\/em><\/a> star\u2019s battle with FTD (Frontotemporal Dementia).<\/a> She is also friends with Bruce\u2019s current wife, Emma Heming Willis<\/a>, whom he married in 2009. Bruce and Emma share two daughters, Mabel Ray and Evelyn Penn.<\/p>\n Emma and Bruce, as well as their two young daughters, and Rumer, didn\u2019t appear to be present at Marelene\u2019s 90th birthday celebrations.<\/p>\n<\/div>