Birth name Sylva Němečková Gender Female. Known pseudonyms Jessica Koks / Ferrara / Janica / Jessica Cox / Jessica Koks / Kiki / Sonja / Livia A. / Irma / Katka / Sonja L. / Larisa / Livia / Sylva N. / Noemi / Penny / Silvia / Sylvia / Vivienne Date of birth 26.04.1991…