Poseur is a pejorative term, often used in the punk, heavy metal, hip hop and goth subcultures to describe a person who copies the dress, speech, and/or mannerisms of a group or subculture, generally for attaining acceptability within the group or for popularity among various other groups, yet who is deemed to not share or understand the values or philosophy of the subculture. While this perceived inauthenticity is viewed with scorn and contempt by members of the subculture, the definition of the term and to whom it should be applied is subjective. While the term is most associated with the 1970s- and 1980s-era punk and hardcore subculture, English use of the term originates in the late 19th century.

The English term poseur is a loanword from French, in which it is used figuratively since the mid-19th century with the same meaning as in English to refer to people who "affect an attitude or pose". Etymonline, an online etymology dictionary, argues that since the "word is Eng.[English] poser in Fr.[French] garb", the term itself could thus "be considered an affectation."

Avril Ramona Lavigne (pronunciation: /ˈævrɨl ləˈviːn/; AV-ril lə-VEEN; born 27 September 1984) is a Canadian singer-songwriter. She was born in Belleville, Ontario, but spent most of her youth in the small town of Napanee. By the age of 15, she had appeared on stage with Shania Twain; by 16, she had signed a two-album recording contract with Arista Records worth more than $2 million. In 2002, when she was 17 years old, Lavigne broke onto the music scene with her debut album Let Go.

Let Go made Lavigne the youngest female soloist to reach No. 1 in the UK, and the album was certified four-times platinum by the Recording Industry Association of America. By 2009, over 16 million copies had been sold worldwide. Her breakthrough single, "Complicated", peaked at No. 1 in many countries around the world, as did the album Let Go. Her second album, Under My Skin, was released in 2004 and was her first album to peak at No. 1 on the U.S. Billboard 200, eventually selling more than 10 million copies worldwide. The Best Damn Thing, Lavigne’s third album, was released in 2007, becoming her third No. 1 album in the UK Albums Chart and featuring her first U.S. Billboard Hot 100 No. 1 single, "Girlfriend". Lavigne has scored six number-one singles worldwide, including "Complicated", "Sk8er Boi", "I'm with You", "My Happy Ending", "Nobody's Home", and "Girlfriend". With more than 30 million copies of her albums sold worldwide, Lavigne is one of the top-selling artists releasing albums in the U.S., with over 10.25 million copies certified by the RIAA. Her fourth studio album, Goodbye Lullaby, was released in March 2011. Goodbye Lullaby gave Lavigne her fourth top 10 album on the U.S. Billboard 200 and the UK Albums Chart and her third No. 1 album in both Japan and Australia. Three months after the release of Goodbye Lullaby, Lavigne began work on her fifth album, which will be released on Epic Records following her departure from RCA Records.