Zdravković, Olga Jančevecka, Divna Đokić, Mila Matić, actress Ljubica Janićijević who impersonated Gypsy fortune-tellers, Radomir Šobota as a drummer, and especially Sofka Nikolić. Nikolić, the first folk music star of newly formed Yugoslavia in the 1920s and 1930s, published dozens of records, becoming one of the most commercial female singers in Europe. Musicians from Europe and United States were visiting her in Skadarlija, including Josephine Baker, who befriended her. Called "Queen of Skadarlija", Nikolić withdrew in 1939 when her young daughter, her only child, passed away. Restaurants are proud of their lists of worldwide celebrities and epicureans who visited them over the decades. Even Alfred Hitchcock ended his diet in Skadarlija . Often, they post photographs of their visits on the walls. For example, over the years, Tri šešira welcomed numerous famous guests such as guitarist Jimi Hendrix, politicians George H. W. Bush, Josip Broz Tito, King Juan Carlos I of Spain, Sandro Pertini, and chess player Anatoly Karpov. Other celebrities who visited Skadarlija include queen Elizabeth II, politicians Willy Brandt, Gianni de Michelis, Helmut Kohl, Hans-Dietrich Genscher, Yevgeny Primakov, Igor Ivanov and Margaret Thatcher, author Alberto Moravia, actors Burt Lancaster, Vladimir Visotsky, Gina Lollobrigida, Alain Delon, film director Nikita Mikhalkov, etc. Visitors from the later period include Joe Biden and Johannes Hahn. As similar bohemian quarters, Skadarlija and Parisian Montmartre twinned on 22 October 1977. A group of French artists visited Belgrade to mark the occasion. They were joined by large crowds of Belgraders, and they formed a joint procession which walked from the Monument of Gratitude to France in Kalemegdan Park, through Knez Mihailova Street and Republic Square, to Skadarlija. The photos of the event are kept in the archive of the Serbian Academy of Sciences and Arts. Two identical plaques, commemorating the event, are placed in May 1978. In Montmartre, the plaque is placed on the building of the Free Commune of Montmartre while artist Branimir Bane Minić, who authored the plaque, was dubbed the Knight of Montmartre. In Belgrade, the plaque is placed across the house of Đura Jakšić. Since 1993, the official opening of the summer season in Skadarlija (restaurants are open the entire year) has been marked by rising a "bohemian flag". The flagpole is located in front of the Zlatni bokal restaurant. The ceremony is always attended by celebrities, including popular and opera singers, actors, and artists. The season usually begins in the