Puberty 2 is the fourth studio album by American indie pop singer-songwriter Mitski, released on June 17, 2016, the first release through Dead Oceans. It was produced by longtime collaborator Patrick Hyland. Upon its release, Puberty 2 received widespread acclaim from music critics, with many praising Mitski's emotional delivery and lyrically complex themes, which include longing, love, depression, alienation and racial identity. The album was preceded by the lead single "Your Best American Girl" on March 1, 2016, alongside the announcement of the album, and the second single "Happy" on May 3, 2016. A music video for "A Burning Hill" was released on October 11, 2016, followed by a tour covering North American and Europe. On June 9, 2026, the 10 year anniversary deluxe edition—which included bonus tracks "Fireproof" and "I'm a Fool to Want You” from the original Japanese CD—was released.