バレエ・リュス・ド・モンテカルロ
Krassovska joined the Ballet Russe de Paris in 1935 and René Blum’s Ballet Russe de Monte Carlo in 1936. In 1938, she became a member of the Massine-Denham Ballet Russe de Monte Carlo. During her time with the troupe, Krassovska worked closely with Mikhail Fokine, the well-known choreographer and reformer of conventional ballet traditions. Fokine personally coached her for roles in Les Sylphides, Le Spectre de la Rose and other ballets. She advanced to the position of ballerina (principal dancer) in 1938, and performed with the group until 1949.