She gained prominence from a young age as one half of a modeling duo with her identical twin sister Alex, appearing in various commercials.
[3][4][5] During this tenure she and identical twin sister Alexia formed the pop duo Brit & Alex, where they became famous for appearing in TV commercials for John Freida's Sheer Blonde line (where they would be known to fans as "The Sheer Blonde Twins") and later signed with Interscope Records.
They also went to England in the hopes of establishing a musical career there, but would achieve little success,[6] having reached number 75 on the UK Singles Chart with "Let It Go" in 2008.
It was written and produced by Kevin Rudolf and Jacob Kasher and reached number one on Billboard's Hot Dance Airplay chart.
[8] In an interview with Page Six, Smith revealed that the song was originally intended to be her debut single; however, her label changed plans last minute.
[9] Shortly after "Karma's a Bitch" out-charted Siwa's version on iTunes in the United States in April 2024,[10][11] Smith shared that she is returning to the music industry via an announcement of her upcoming EP, scheduled to debut on May 17, 2024.