Melanija Knavs was born in Novo Mesto, Slovenia (then part of Yugoslavia), on April 26, 1970. Her father, Viktor Knavs (born March 24, 1944), was from the nearby town of Radeče and managed car and motorcycle dealerships for a state-owned vehicle manufacturer. Her mother Amalija (née Ulčnik) (born July 9, 1945) came from the village of Raka and worked as a patternmaker at the children's clothing manufacturer Jutranjka in Sevnica. As a child, Melania and other children of workers at the factory participated in fashion shows that featured children's clothing. She has an older sister, Ines, who is an artist and her "longtime confidant", and an older half-brother—whom she reportedly has never met—from her father's previous relationship.