Tallulah Willis is officially off the market. The youngest daughter of Bruce Willis and Demi Moore married musician Justin Acee in Sun Valley, Idaho, on Saturday. According to Vogue, she walked down the aisle in a custom-made strapless Balenciaga gown crafted from silk satin with a draped train bustled with a bow. Ahead of the wedding, Tallulah’s older sister Scout posted a pic of the happy couple getting their marriage license at Blaine County Courthouse in Hailey, Idaho. Tallulah, 32, looked stylish in a red polka-dot halter dress and a pair of sunglasses as she smiled next to Acee. The former Made Violent drummer — who now releases…