Tatsiana Ulasen graduated from the Belarusian State Choreographic College (Vera Shvetsova’s class).

She joined the ballet company of the National Academic Bolshoi Theatre of the Republic of Belarus in 2003.

In 2010 she graduated from the Belarusian State Academy of Music.

Since 2024 she has been a teacher and répétiteur of the National Academic Bolshoi Opera and Ballet Theatre of the Republic of Belarus.

The Snake / Le Petit Prince by Eugene Glebov
The Singer, The Pioneer leader / Illusions of Love to the music by Dmitri Shostakovich, Frédéric Chopin, Leonid Shirin
Bathilde / Giselle
Persian dance / The Nutcracker
Siren / Le Villi. Fatum
The Young Lady / Boléro
The Courtesan / Spartacus
Anna / La Sylphide
Fairy Carabosse, Maids of Honour / The Sleeping Beauty
Lady Capulet / Romeo and Juliet
Gypsy dance solo / Laurencia
Bathilde, Myrtha / Giselle, ou les Wilis
Gypsy, Mercedes, Street Dancer / Don Quixote
Indian dance, Pas d’action / La Bayadère
The Broom / Snow White and the Seven Dwarfs
Big Swans, Spanish dance solo, Mazurka solo / Swan Lake
Black Wife, Mazurka solo / The Fountain of Bakhchisarai
The Imprisoned Girl / Polovtsian Dances
The Stepmother, Spanish dance solo / Cinderella