While living in Paris Westergren received a call from Swedish director Göran Gentele, who offered her a role in his 1951 comedy film Leva på 'Hoppet'.
Næss is best known for his work directing two of the three films about Ingvar Ambjørnsen's Elling character, Elling (2000), which was nominated for the foreign language film Oscar and Elsk meg i morgen (Love Me Tomorrow), (2005), in addition to Just Bea (2003), Mozart and the Whale (2005) and Hoppet (The Jump, 2007) in Sweden.