Outside her music, she has competed on reality shows, Popstar to Operastar (2011), Dancing on Ice (2019) and won the fourth season of the Australian version of The Masked Singer (2022) and Celebrity Island with Bear Grylls.

Melody Thornton is a native of Phoenix, Arizona and was born on September 28, 1984, to a family of Mexican and African-American descent.

[7] Thornton was selected to strengthen their vocal ability and joined Carmit Bachar, Ashley Roberts, Nicole Scherzinger, Jessica Sutta, and Kimberly Wyatt,[8] and signed a contract with the Pussycat Dolls partnership, receiving a percentage of the group's revenues.

[15] PCD went on to sell seven million copies worldwide and established the Pussycat Dolls as viable in the music industry earning them a reputation among the century's few breakout successes.

[20] Doll Domination included the singles "When I Grow Up" and "I Hate This Part", which reached the top twenty on the US Billboard Hot 100 chart.

This would go on to lead to a public outburst by Thornton during the group's tour appearance while opening for The Circus Starring Britney Spears.

[28] In June 2011 she participated in the second series of Popstar to Operastar, a British television programme in which pop stars were trained to sing opera; she was eliminated in the third week.

[32][33][34] In 2017, Thornton returned to British television by appearing on the second series of Celebs Go Dating and Celebrity Island with Bear Grylls.

[41] In 2022, Thornton competed and won the fourth season of the Australian version of The Masked Singer as "Mirrorball",[42] and the following year reprised her role as Rachel Marron in the 2023 UK and Ireland production of the musical The Bodyguard.

[44] Her vocals were likened to Christina Aguilera's,[9] who also influenced Thornton's career, as the singer noted: "[She] inspired me to follow my dreams, [...] she changed my life".