Tessa Hartmann

Tessa Hartmann. Actress: Sir Billi. Tessa Hartmann was born on 2 October 1969 in Glasgow, Scotland, UK. She is an actress and writer, known for Sir Billi (2012), Becoming Charlie (2022) and The Real Housewives of Jersey, UK (2020). She is married to Sascha Hartmann. They have four children.