Strictly Come Dancing judge Shirley Ballas has shared a heartbreaking tribute to her "unique" and "unforgettable" friend as he passed away aged 54.The 62 year old broke the news on Instagram that designer Luca Sartori suddenly died, leaving his loved ones shocked. Luca's partner, Vesa Hietala, was first to break the tragic news, as he told his followers what happened to him. He wrote on Instagram: "Yesterday, I lost the love of my life, my best friend and my partner of 26 years.