Inspired by her experiences in the music industry, she co-wrote the song with James Abrahart and Lauren Aquilina, and its producers Cirkut and Lostboy.

She would later announce in a social media post the song's name change due to fan demand,[4] after initially giving it the title "That's Showbiz, Baby".

[12] Annabel Nugent of The Independent described it as "a hard and fast electro-pop bop about being poked and prodded, papped and penalised as a woman in the spotlight".

[1] Shahzaib Hussain of Clash Magazine described "It Girl" as "a melodramatic anthem whereby Jade purges her own experience being exploited as a pliable, young female artist.

"[13] Writing for the Billboard magazine, Jason Lipshutz described "It Girl" as a song which "immediately showcases Jade's expansive voice before slamming into thick drums and wobbly harmonies—creating a sonic juxtaposition that worked so well with her breakthrough track, and once again succeeds here.