Ella relocated to LA shortly after her time at BIMM London. She quickly began gaining traction as an R 'n' B artist in her own right, scoring a tour support slot with eleven-time Grammy award winner Bruno Mars and setting a new record by becoming the first British artist in 26 years to score a No.1 single on the US R&B chart with her multi-platinum single 'Boo'd Up'.
Ella made chart history after knocking Drake’s 'Don’t Matter to Me' off the top spot, making her the first UK singer to do so since three-time BRIT Award winner Lisa Stansfield’s All Woman went to No.1 in 1992. The track soon received two Grammy Award nominations including Song Of The Year 2018, putting her alongside huge names such as Kendrick Lamar & SZA, Shawn Mendes, Drake, Brandy Carlile, Zedd & Maren Morris, Lady Gaga & Bradley Cooper and Childish Gambino.
Shortly after the release of her self titled debut album in late 2018 on Mustard's 10 Summers label, Ella signed a global record deal with Sony/ATV, making her a major musical force to be reckoned with.
In 2019, Ella’s hit single “Boo'd Up” was nominated for two Grammy Awards: Song of the Year and Best R&B Song, with the track winning the latter. The single was later remixed by two US titans: Nicki Minaj and Quavo. Ella herself was nominated for British Breakthrough Act at the 2019 Brit Awards. At the 2019 Billboard Music Awards, she won three awards, including the award for Top R&B Artist.
After setting off on her debut headline tour in 2019, Ella joined Ariana Grande on her 2019 Sweetener World Tour’s European leg. Ella has also collaborated with the likes of Ed Sheeran, Usher and Ty Dolla $ign.
On 2nd October 2020, Ella released the single “Not Another Love Song”, which peaked at number 9 in the US R&B charts. The track was also featured in Rihanna's Savage x Fenty show, and Ella also performed it on The Late Show With Stephen Colbert a few days after its release.