She grew up in Vienna with her grandmother after her mother Hannelore (a German theater actress) and her father Sammy Ammissah (a Ghanaian engineer) separated.

Kiesbauer began her media career as a presenter for the Austrian public service television broadcaster ORF while studying journalism and dramaturgy.

[2] However, after 40 shows she resigned suddenly claiming that the frequent traveling between Vienna and Berlin was putting too much stress on her private life.

[5] On 17 December 2007, she hosted the 2007 FIFA World Player of the Year awards at the Zürich Opera House in Zurich, Switzerland with Rainer Maria Salzgeber [de].

[6] On 23 May 2015, Kiesbauer hosted the Eurovision Song Contest 2015 along with Mirjam Weichselbraun and Alice Tumler at the Wiener Stadthalle in Vienna.