In 1997, Frier was member of the cast of the
RTL series
Hinter Gittern – Der Frauenknast for 54 episodes. She played the lesbian prisoner, Vivi Andraschek In the same year she took a part in the thriller
Post Mortem which was on RTL as well. The thriller eventually became a series in 2007. In 1998 she started her comedy career in the
Pro7 programme
Switch. Besides she took part in the
Sat.1 crime series
SK Kölsch from 1999 to 2001. From 2000 to 2002, Frier was co-host of the
Wochenshow. Since 2004 she is a regular on the improvisational comedy show
Schillerstraße. Since 2005 Frier is also a cast member of the children's programme
Sesamstraße (Sesame Street), as well as of the Pro7 comedy series
Alles außer Sex. Frier made a guest appearance in an episode of the series
Familie Heinz Becker. Additionally, she hosted the
Stefan Raab show
SSDSGPS in 2004 and his
Bundesvision Song Contest in
2005. Frier had a starring role in the theatre play Nora in the
Theater im Bauturm theater in Cologne. In 2006, she was awarded a
Golden Romy for the best programme idea for
Schillerstraße. == Personal life ==