Mylène & Rosanne won the national finals 28 September 2013 and therefore were to represent the Netherlands in the Junior Eurovision Song Contest 2013 in Kyiv on 30 November 2013.

In 2008–2010, Mylène played in the musical Joseph and The Amazing Technicolor Dreamcoat as Maria and Naomi, and in 2011 together with Rosanne in the children's ensemble of Droomvlucht de Musical.

In 2012/2013, she played the role of Little Fiona in Shrek de musical.

After this in 2012–2013 season, a bigger role as the blind Nelly in Dik Trom followed.

[3] Mylène and Rosanne were chosen to announce the Dutch votes at the Junior Eurovision Song Contest 2014 in Malta.