The Pretty Reckless is a post-grunge band formed and fronted by Momsen. The band was previously touring with Momsen on vocals, John Secolo on guitar, Matt Chiarelli on bass, and Nick Carbone on drums. The band was originally to be called "The Reckless", but was changed to the The Pretty Reckless due to trademark problems. Momsen has stated in an interview with OK! Magazine that the band has signed with Interscope Records and will be releasing their debut album later this year. Earlier this year, The Pretty Reckless toured with The Veronicas. In another interview Momsen briefly discussed the sound of the band, saying it would be "not what people are going to expect" and will feature a dark and heavy sound but would have "lighter, fun stuff as well." She also revealed that she performs as the lead vocalist and guitarist and writes all of the songs.

In an interview with MTV, Momsen revealed the influences on the band include The Beatles along with many grunge bands, such as Soundgarden, Audioslave, Hole and Nirvana. She also stated that her personal influences also include Debbie Harry, Joan Jett, Cherie Currie and Courtney Love. As of August 17, 2009, the band's myspace page is streaming demos of the songs "I Zombie" and "He Loves You".