De Steenwinkel was born in Utrecht. The family moved to Bergen, North Holland a year later. Her father is a wealthy and successful television director famous for creating many talk shows such as PAUW, DWDD, Jinek and her mother was a handicraft teacher.
In 2015, de Steenwinkel auditioned for season six of The Voice of Holland, where she was a member of Team Marco. She performed “The Power of Love” in her blind audition, where all four coaches turned their chairs. On 29 January 2016, de Steenwinkel went on to win the competition. Following her win, she released the single “Perfect World”, which was certified gold and peaked within the Top 40 in the Netherlands. Her follow-up single, “Ride It”, achieved similar levels of success.
In 2017, de Steenwinkel became involved with season ten of De beste zangers van Nederland and season three of Dance Dance Dance.
In January 2020, she released her debut album Onverstaanbaar.