Katarzyna Estate was the special guest and partner at the official event in honor of Poland's national holiday - Constitution Day. The Ambassador of the Polish Republic in Bulgaria H.E. Krzysztof Krajewski and his wife hosted a reception in the embassy's garden and halls. The official event was attended by Mr Valeri Simeonov, Deputy Prime Minister of Bulgaria, and Mr Valeri Zhablyanov, deputy chairman of the National Assembly of the Republic of Bulgaria, deputies, notable members of the state administration, ambassadors, persons from the world of politics, the economy, science, and culture, as well as representatives of international and non-governmental organisations, the Polish community in Bulgaria, and the media. Polish border officers, who take part in the defense of the Bulgarian border in association with the European Border and Coast Guard Agency (Frontex), also attended the event. The celebration was marked with a performance by the Polish jazz quartet Zygi Jazz Band. The Polish and Bulgarian Eurovision songs, performed by Katazyna Moss and Kristian Kostov respectively, were promoted during the reception.