Russian Tsvetnaya Bolonka (Russian: Болонка), also known as the Bolonka Zwetna in Germany, is a rare toy breed of the Bichon type, developed in Moscow and Saint Petersburg, Russia from the ancestors of smaller dogs such as the Bichon, Toy Poodle, Shih Tzu, Pekingese and French Bolognese. They include the white version Franzuskaya Bolonka, which is a variation of the Italian Bolognese dog. Franzuskaya means French, Zwetna is the German term for Tsvetnaya and means multicolored, and Bolonka translates as “Bolognese” in a number of Slavic languages. The Bolonka has recently gained more fame by being the chosen breed of Prince William and Kate Middleton.

Source: Wikipedia 

Russian Tsvetnaya Bolonka