About All About That Bass

"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 first extended play (EP) Title (2014) and her 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). It also reached number one in 58 countries and received multi-platinum certifications in Australia, Canada, Denmark, Italy, Mexico, New Zealand, Norway, Sweden, Spain, and the United Kingdom, becoming the fourth best-selling song of 2014 with 11 million copies sold worldwide. Fatima Robinson directed the song's music video, which features 1950s-inspired aesthetics and a pink pastel backdrop. The video was released on June 10, 2014, and played an important role in the song's rise to prominence. "All About That Bass" inspired parodies and cover versions. Trainor performed the song on television shows such as The Tonight Show Starring Jimmy Fallon, Country Music Association Awards, and The X Factor UK, and included it on the set lists of her concert tours That Bass Tour and MTrain Tour (2015), and The Untouchable Tour (2016).