Piece by Piece is the seventh studio album by American recording artist Kelly Clarkson. It was released on February 27, 2015, through RCA Records. The follow-up to her first Christmas album, Wrapped in Red (2013), it is her first studio album to completely contain original material since Stronger (2011), and her final studio album under her recording contract after winning the first season of the television singing competition series American Idol in 2002.

Piece by Piece sees Clarkson reuniting with frequent collaborators Greg Kurstin, Jesse Shatkin, Jason Halbert, Eric Olson, and Chris DeStefano. Her pregnancy hindered her efforts to write more than five songs for the album. This being the case, she gathered material from songwriters such as Sia, Matthew Koma, MoZella, Bonnie McKee, David Jost, Semi Precious Weapons lead singer Justin Tranter, and former Cobra Starship member Ryland Blackinton, among others. Inspired by the orchestral production on Wrapped in Red, Clarkson wanted all the songs on Piece by Piece to resonate like its own film soundtrack, taking a cue from the soundtracks of the feature motion pictures Cruel Intentions (1999) and Love Actually (2003) and commissioning orchestral arrangements by Joseph Trapanese. The album is illustrated as a concept record telling a single story, using themes of heartbreak, personal struggles, peace, and empowerment. The music of Piece by Piece consists of electropop, orchestral pop, power pop and electronic dance music, marking a departure from the predominant pop rock sound of her previous studio albums. It also features guest vocals by John Legend.

Piece by Piece was released to positive reception from music critics, who applauded Clarkson's vocal performances. Criticism mainly targeted the album's production, as well as its belaboring on midtempo arrangements. Commercially, it became her third album to debut at the top of the Billboard 200 chart with 97,000 units sold. The album was preceded by the release of its lead single "Heartbeat Song" in January 2015, which became a top 30 hit on the Billboard Hot 100 chart. The record's second single, "Invincible" was released in May 2015, while its title track debuted at number eight after Clarkson's performance during the fifteenth season of American Idol. The album's supporting tour, the Piece by Piece Tour, began on July 11, 2015. On December 7, 2015, Piece by Piece received a nomination for the Grammy Award for Best Pop Vocal Album at the 58th Annual Grammy Awards. Being her fourth nomination in the category, Clarkson broke her previous record of the most nominations which she once shared with Madonna, P!nk, Sarah McLachlan and Justin Timberlake. The albums lead single, "Heartbeat Song", also received a nomination for the Grammy Award for Best Pop Solo Performance. On March 4, 2016, RCA released Piece by Piece Remixed, which contains remixed versions of ten of the tracks from the album.