In 2008, record executive and producer will.i.am signed her to his label will.i.am Music Group, an imprint of Interscope Records. She released her debut album, Perfectionist, in 2011, and her second album, Trouble, in 2013.
In 2014 she married boyfriend Willy Moon, who is also a singer on the same label. As Natalia Kills, Sinclair released the studio albums Perfectionist (2011) and Trouble (2013). In 2016, she started a band which she is the lead vocalist of, Cruel Youth, with whom she has released the EP, +30mg (2016).
Aside from her own works, she has been able to work with many other artists such as Rihanna, Madonna & Cyndi Lauper and even went on to get a Grammy nomination in 2016 for her writing on Rihanna’s ‘'Kiss it Better’‘.