A string of festivities took place over last weekend and other famous faces such as Olivia Palermo and Portuguese comedian Herman José, were also among guests.
The main party is reported to have taken place in the Marquês de Fronteira palace, with a dinner for some 90 guests, organised by company Festa Aluga.
According to newspaper Correio da Manhã, for the occasion the 85-year-old designer asked for a classically elegant décor, featuring traditional Portuguese azulejos.
The birthday cake was designed by renowned Portuguese artist, Joana Vasconcelos, whose Lisbon workshop hosted the last day of celebrations for Valentino’s boyfriend’s 73rd birthday.
The newspaper further claims no expense was spared in providing guests with a wonderful time in Lisbon, a city which it says Valentino and his partner “escape to whenever they can.”