Nosbusch speaks Luxembourgish, German, French, Italian and English. She has acted in both French-language and German-language films and television productions since her mid-teens. She was a member of the youth drama group of the Lycée Hubert Clément of Esch-sur-Alzette (Luxembourg), and appeared in some Italian-language TV miniseries. She presented the Eurovision Song Contest 1984 in Luxembourg, and hosted a kids' version of the game show Ruck Zuck called "Kinder Ruck Zuck".