De Lavallade became a member of the Lester Horton Dance Theater in 1949 where she danced as a lead dancer until her departure for New York City with Alvin Ailey in 1954. Like all of Horton's students, de Lavallade studied other art forms, including painting, acting, music, set design and costuming, as well as ballet and other forms of modern and ethnic dance. She studied dancing with ballerina Carmelita Maracci and acting with Stella Adler. In 1954, de Lavallade made her Broadway debut partnered with Alvin Ailey in Truman Capote's musical House of Flowers. In 1955, she married dancer/actor Geoffrey Holder, whom she had met while working on House of Flowers. It was with Holder that de Lavallade choreographed her signature solo Come Sunday, to a black spiritual sung by Odetta. The following year, de Lavallade danced as the prima ballerina in Samson and Delilah, and Aida at the Metropolitan Opera. She made her television debut in John Butler's ballet Flight, and in 1957 she appeared in the television production of Duke Ellington'sA Drum Is a Woman. She appeared in several off-Broadway productions, including Othello and Death of a Salesman. An introduction to 20th Century Fox executives by Lena Horne led to more acting roles between 1952 and 1955. She appeared in several films, including Carmen Jones with Dorothy Dandridge and Odds Against Tomorrow with Harry Belafonte. De Lavallade was a principal guest performer with the Alvin Ailey Dance Company on the company's tour of Asia and in some countries the company was billed as de Lavallade-Ailey American Dance Company. Other performances included dancing with Donald McKayle and appearing in Agnes de Mille's American Ballet Theatre productions of The Four Marys and The Frail Quarry in 1965. At the insistence of friend John Butler, she began teaching at the Yale School of Drama as a choreographer and performer-in-residence in 1970. She staged musicals, plays and operas, and eventually became a professor and member of the Yale Repertory Theater. Students during this time includes Meryl Streep, Sigourney Weaver, Joe Grifasi, Christopher Durang, and Wendy Wasserstein. Between 1990 and 1993, de Lavallade returned to the Metropolitan Opera as choreographer for Porgy and Bess and Die Meistersinger. In 2003, de Lavallade appeared in the rotating cast of the off-Broadway staged reading of Wit & Wisdom. In 2010, she appeared in a one-night-only concert semi-staged reading of Evening Primrose by Stephen Sondheim. In 2014 de Lavallade premiered her solo showAs I Remember It. The work was a meditation on her history in dance through performance, film, and storytelling.
Personal life
De Lavallade had resided in New York City with her husband Geoffrey Holder until his death on October 5, 2014. Their lives were the subject of the 2005 Linda Atkinson and Nick Doob documentary Carmen and Geoffrey. The couple had one son, Léo. De Lavallade's brother-in-law was Boscoe Holder.