The pop punk artist made history by becoming the youngest female solo performer to top the U.K. charts with her album Let Go, which also earned eight Grammy nominations. Her self-titled fifth studio album dropped in November 2013, further solidifying her presence in the music industry.

Before she rose to fame, she started singing at just two years old. Her passion for music grew even stronger when her father set up a recording space for her in the basement. This early exposure helped her gain experience performing at local county fairs. She grew up with two siblings—Matthew, her older brother, and Michelle, her younger sister.

In her personal life, she married Deryck Whibley on July 15, 2006, though the couple called it quits on November 16, 2010. She later tied the knot with Nickelback frontman Chad Kroeger in 2013, but the marriage ended in 2015. From 2018 to 2019, she was in a relationship with Phillip Sarofim. Then, she began dating rapper Mod Sun, and in April 2022, the pair excitedly announced their engagement. However, they decided to go their separate ways by February 2023. Not long after, she started a new relationship with Tyga in early 2023, though that too came to an end a few months later.

Throughout her career and personal life, the pop punk icon has remained a prominent and often talked-about figure in the entertainment world.