"All About That Bass" is the debut single of American singer-songwriter Meghan Trainor, released on June 30, 2014, through Epic Records. The song was included on Trainor's debut extended play (EP) Title (2014) and her debut studio album of the same name (2015).
Written by Trainor and producer Kevin Kadish, "All About That Bass" is a bubblegum pop, doo-wop and hip hop track. Trainor, who as a teenager struggled with her negative body image, was inspired to write the song to promote self-acceptance.
Some music critics praised "All About That Bass"'s production and memorable message, while others called it a novelty song and criticized the failure of its lyrics to empower every body type.
The song was nominated for awards, including Record of the Year and Song of the Year at the 57th Annual Grammy Awards. It was the best-selling song by a female artist during the 2010s in the United States, and was certified Diamond by the Recording Industry Association of America (RIAA).