After directing music videos, commercials and the feature films "Freud Flytter Hjemmefra" ("Freud's Leaving Home", 1990), "Det Bli'r i Familien" ("Family Matters", 1993), "Pensionat Oscar" ("Like it Was Never Before", 1995) and "Sekten" ("Credo", 1997), Bier made a breakthrough in her home country of Denmark with the film "The One and Only" in 1999. A romantic comedy about the fragility of life, the film won a clutch of Danish Film Academy awards and established Bier's relationship with actress Paprika Steen. The film remains one of the most successful domestic films ever released in Denmark.