[6] Growing up, Williams was always shy when it came to performing and singing in front of people, so her mother took her to see a hypnotist when she was 17, and it helped her to overcome the fear.

[10] Prior to her renderings of songs for the supermarket chain Aldi, Williams released her debut single as Sunday Girl, "Four Floors", through Polydor Records on 28 March 2010.

[14] She wrote and produced the song (along many others from her yet-to-be-released album) with Jim Eliot, who has also worked with Kylie Minogue, Ladyhawke, and Ellie Goulding.

[15] In June 2011, Williams was featured on Martin Solveig's album Smash, performing "Let's Not Play Games," which she co-wrote.

for Thomson's 2011 holiday TV campaign, and the single's success helped her to be signed by Universal's Island Records in early 2012.

[18] The pair have since streamed mixes 90s Hip Hop, R&B and Pop at night clubs and fashion parties in London and other cities in the UK.

[22] Williams cites her fashion icons as Coco Chanel and Karl Lagerfeld, and describes her own style to be masculine, tailored, and tom-boyish.