Cas is the daughter of Miran Čas (July 22, 1952, Slovenj Gradec - February 23, 2015, Ljubljana) and Aleksandra Kas.

[2] Her first appearance on television was a 1988 commercial for the Slovene soft drink company carbonated Cockta, directed by Jaka Judnič.

Her first movie was the 1989 Slovene youth film Peklenski načrt (The Infernal Plan).

She started to appear on TV more often from 1997, as a host of music program for younger generations called Atlantis which was broadcast on Kanal A.

Her international career began with the role of Gabriella in the 2011 Irish movie The Guard by John Michael McDonagh.