Mainstream Sellout

Mainstream Sellout is the sixth studio album by American musician and singer-songwriter Machine Gun Kelly, released on March 25, 2022, through Bad Boy Records and Interscope Records. It is his second collaborative project with drummer and producer Travis Barker, following 2020's Tickets to My Downfall. The album was initially announced in August 2021 under the title Born with Horns, before being renamed in January 2022.

A continuation of Kelly's transition into pop-punk, Mainstream Sellout was met with mixed reviews from critics. Kelly embarked on the Mainstream Sellout Tour throughout 2022 to promote the album. A deluxe edition with six new tracks, subtitled "Life in Pink Deluxe", was released on June 24, 2022. The album was nominated for Best Rock Album at the 65th Annual Grammy Awards.