She gained further recognition that year after the release of her first major label single "Diet Pepsi", which received positive reviews and peaked at 54 on the US Billboard Hot 100 chart.

"[8] Rae first gained attention after joining the social media app TikTok in July 2019, uploading dance videos to trending songs on the platform.

[11] In July 2020, Addison released a weekly Spotify-exclusive podcast alongside her mother, Mama Knows Best, covering their personal and career lives.

[21] That same month, multiple songs from her unreleased EP leaked on YouTube, which Rae initially thought "could mark the death knell for her music career".

[29] Rae performed the song live at Madison Square Garden with Troye Sivan and Charli XCX on the Sweat tour.

[33] In a review of "High Fashion" for the music magazine Pitchfork, writer Meaghan Garvey described Rae's unannounced debut album as her most anticipated pop release of the year.

Rae is influenced by many artists including Jennifer Lopez, Beyonce, Katy Perry, Taylor Swift, Britney Spears, Madonna, Rihanna, Barbra Streisand, Sophie, Arca, and Charli XCX.

[36][37] Forbes published a report in August 2020 revealing that Rae earned $5 million in the last year through June from her various endorsement deals and merchandise, making her the highest-earning TikTok star at the time.

[44] In October 2020, Rae confirmed she was in a relationship with TikToker Bryce Hall through various social media posts; however, they broke up the following year.

[45][46] In January 2021, Rae donated her $1 million in prize money from winning an all-star Mario Tennis Aces tournament called the Stay At Home Slam to the charity No Kid Hungry.

[48] In August 2022, Rae came under scrutiny when she made a post featuring a bra and a bikini with the words "Father", "Son" and "Holy Spirit", which was considered offensive by some Christians.