Sidney Haefs was born in Los Angeles, CA. She began her training at the Santa Clarita Ballet Academy under the direction of Corinne Glover. Participating in Royal Academy of Dance Exams, she holds her Advanced 2 certificate with distinction. Ms. Haefs continued her education at the University of Utah where she graduated magna cum laude with a BFA in Ballet and a Minor in Human Development and Family Studies. From there, she was offered a traineeship with Kansas City Ballet where she spent a year before joining the company as an apprentice in 2019.

During her time with the company, she has had the opportunity to perform many roles including the Diamond Principal in George Balanchine’s Jewels, Snow Queen in The Nutcracker, Big Swans in Swan Lake, Peasant Pas de deux in Giselle, Queen of the Dyads in Don Quixote, the Emerald Ballerina in Septime Webre’s The Wizard of Oz, as well as Isabel in In the Middle Somewhat Elevated.  She has also performed roles in Val Caniparoli’s Lady of the Camellias, Adam Hougland’s Carmina Burana, George Balanchine’s Serenade, Edward Liang’s Wunderland, Jirí Kylián’s Petit Mort, Mark Morris’ Sandpaper Ballet, and Alexander Ekman’s Cacti. In addition to her performing background, Ms. Haefs holds her level one PBT (Progressing Ballet Technique) certification, DK Pilates Mat Certification, as well as an NASM Certified Personal Trainer certificate.