Mourners on Thursday continued to pay tribute to iconic fashion designer Valentino, who died aged 93 on Monday, as he lies in state at his foundation's PM23 museum in Rome's Piazza Mignanelli.     At least 5,000 people came to the PM23 to honour Valentino on Wednesday on the first day of his lying-in-state.     A moment of prayer was held in the presence of mourners including Valentino's long-time personal and professional partner Giancarlo Giammetti when the complex re-opened on Thursday.