(née T. Pihl Petersen; b Copenhagen, 19 Jul. 1931; d Salt Lake City, 19 May 1985)
Danish dancer and teacher. She studied at Royal Danish Ballet School from 1939 and joined the company in 1948, becoming solo dancer (principal) in 1950. Her powerful technique and long, strong lines were given their perfect showcase in Lander's Études (which she inherited, after a few early performances, from Margot Lander), and in 1950 she and Lander were married. In 1951 she moved with him to Paris where she continued her studies with Egorova and Preobrajenska. Between 1951 and 1952 she was guest ballerina with Original Ballet Russe and between 1951 and 1954 with Paris Opera Ballet. She also made regular appearances as principal with London Festival Ballet (1954–9), Ballet Théâtre Français (1958), and American Ballet Theatre (1961–71). In 1971 she returned to the Royal Danish Ballet as soloist and teacher, retiring from the stage in 1976. After divorce from Harald L. she married dancer Bruce Marks (1966). She was made Knight of the Dannebrog in 1957.