Nach ihrem Schulabschluss absolvierte Kleinert eine Lehre zur Keramikfacharbeiterin. Von 1987 bis 1990 besuchte sie in Leipzig die Theaterschule „Hans Otto“. Anschließend absolvierte sie ein zweijähriges Praktikum am „Neuen Theater“ in Halle. Von 1991 bis 1993 hatte sie ein Engagement am Brandenburger Theater.
Seit 1993 kennt man Kleinert vor allem aus Fernsehkrimis. Sie war unter anderem als Eva Kowalski in einigen Folgen der Serie Sperling sowie im Polizeiruf 110, Ein Fall für zwei und im Tatort, aber auch in der Serie Unser Lehrer Doktor Specht zu sehen.
Von 1999 bis 2003 spielte sie in der RTL-Serie Doppelter Einsatz als Ellen Ludwig an der Seite von Despina Pajanou. Seit 2008 ist sie in der Serie Mord mit Aussicht in der eher komischen Rolle der neugierigen Polizistenfrau Heike Schäffer zu sehen. Seit 2013 hat sie die Rolle der Sittenpolizistin Dagmar Schnee in der ZDF-Serie SOKO Leipzig.
2024
as Elke Brinkmann
2023
as Gitte Pietsch
2023
as Birgit
2022
as Lisbeth Schlabodnik
2019
as Astrid
2019
as Ingrid
2019
as Marleen
2018
as Molly Pepper
2018
as Uli
2018
as Viki Müller
2017
as Emma
2017
as Heidi Bank
2016
as Doris Meller
2016
as Marion Stiehler
2016
as Direktorin
2015
as Heike Schäffer
2015
as Martina Gunderson
2015
as Bettina
2015
as Erika Heller
2014
as Bärbel Conradi
2014
as Klara Baumgarten
2014
as Rosi Döpfner
2014
as Marie
2013
as Renate Schümm
2013
as Helga Töpper
2013
as Maria Weintraut
2013
as Marianne Tachinski
2013
as Cordula Melker
2012
as Babette
2012
as Ulla Koske
2012
as Olga
2011
as Self
2011
as Margitta Teichmann
2011
as Iris Stankowski
2011
as Marion Gräfin Lowitz
2011
as Frau Staffe
2011
as Bridget Mayflower
2010
as Gaby Kempe
2010
as Birgit Saitling
2010
as Mandy Kreuzer
2009
as Petra Wemmerle
2009
as Tine Borowski
2009
as Ines Petersen
2009
as Anne Fraser
2009
as Jenny
2008
as Reneé Reinhardt
2008
as Heike Schäffer
2008
as Heike Schaeffer
2007
as Monika Quaas
2007
as Feli Evers
2007
as Mrs. Steiner
2007
as Elke Kuhlmann
2006
as Mandy Schulte
2006
as Beate Frank
2006
as Maggie Drossel
2006
as Self
2006
as Lili Oelze
2005
as Ursula Weihs
2005
as Miri Schachner
2005
as Frau Claudius
2005
as Nora Merz
2005
as Schöffin Rike Horak
2004
as Doris Koslowski
2004
as Eva Banse
2004
as Miriam Scherz
2004
as Heike Eggert
2003
as Erika Zach
2003
as Regine Schupp
2002
as Esther Lohmann
2002
as Pamela Wehmann
2002
as Diane Ward
2001
as Klara Gross
2001
as Dagmar Schnee
2000
as Marion Stahl
2000
1999
as Elke Gebsattel
1998
as Angela
1998
as Gabriele Kroll
1997
as Iris Schmied
1997
as Dörthe Thiele
1997
as Claudia
1997
1996
as Inga
1996
as Jacqueline Gerber
1996
as Steffi Bärwaldt
1996
as Vera Kowalski
1996
as Corinna von Clausewitz
1995
as Karin
1995
as Carolin Sorge
1994
as Hannelore
1994
as Kriminalkommissarin Ellen Ludwig
1994
as Karin
1994
as Margot Kulack
1993
as Margot Deschner
1993
as Karin Struck
1993
as Ilona Westphal
1992
as Friseurin
1992
as Birgit Possat
1992
as Ute Beck
1992
as Trainer
1992
as Mathilde Möhring
1992
as Helene
1986
as Frauke Claassen
1981
as Irene
1981
as Antje Lohner
1971
1971
as Elvira Batzke
1970
as Susanne Siebert
1970
as Monika Scharrer
1970
as Evangelina
1970
as Irene Paulke