Kat Harley was born and raised in Poland. Her first TV appearance was in a Polish TV movie,
Powrót do Polski (1988).
After coming to the United States, Kat worked in the investment banking industry, while still pursuing acting. In 2009, once she was offered a supporting role in the music video, "Just Watch Me", and later, in "I've Got A Secret", she decided to leave the investment business and re-enter the entertainment industry.
Now, Kat is also casting independent films and privately coaching new actors.