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Jessica Ellen Cornish (b. March 1988) [[StageNames a.k.a.]] '''Jessie J''' is a British singer and songwriter who burst onto the UK pop scene in mid-2011 with her hit single "Do It Like a Dude." Since then she has been on the covers of several magazines, garnering attention for her [[CloudCuckooLander weird dress style]], [[MulticoloredHair ever-changing hair colour]] and [[SopranoAndGravel distinct sound]]. Her second single, "Price Tag," featuring B.O.B., gave her worldwide success. She has written for artists such as Music/JustinTimberlake and Music/{{Rihanna}}. She won the ''Critics Choice'' Brit Award in 2010 and since then has gone on to win in several others during 2011; such as the MOBO awards, the Capital FM awards, the Urban Music awards, the Radio 1 Teen awards and the BT Digital Music awards. Jessie J was also nominated for ''Best UK and Ireland Music Act'' in the 2011 MTV Europe Awards.

In addition to her own catalog, she also wrote the MileyCyrus song "Party in the USA."

!!Discography:
* ''Who You Are'' (2011)
* ''Alive'' (2013)
* ''Sweet Talker'' (2014)

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!Provides examples of:

* ActingForTwo: All three adults in the "Who's Laughing Now" video are played by Jessie J, along with herself.
* AdultsAreUseless: All three adults in the "Who's Laughing Now" video are aloof to Young Jessie's actions.
* AliceAllusion: The tea party table in "Nobody's Perfect"
* ApatheticTeacher: The teacher in "Who's Laughing Now" is shown at her desk rolling her eyes and showing lack of interest at the chaos in her classroom.
* AudienceParticipationSong: In live versions of "Wild", Jessie J has the audience sing back the "wild, wild, wild, oh-woah-oh" part.
* AWildRapperAppears:
** B.o.B. spontaneously appears in "Price Tag".
** Taken to another level in "Wild". On the British single, both Big Sean and Dizzie Rascal do verses, with only a chorus separating them. In the American single, only Big Sean gets to rap.
** 2 Chainz in "Burnin' Up".
* BeYourself: ''Don't lose who you are / in the blur of the stars ...''
* BlackSheepHit: "Do It Like A Dude" is not like anything on her debut album ... for better or worse.
* CloudCuckooLander: She plays up this aspect of her personality in interviews.
* CoveredInGunge: In the video for "Who's Laughing Now", Young Jessie sprays her entire class of bullies with fire extinguisher fluid.
* DeliberatelyMonochrome: The music video for "Wild".
* FlippingTheBird: Jessie J flashes both the middle finger and the inverted-V in "Who's Laughing Now."
* GirlPosse: A younger version is shown tormenting Young Jessie J in "Who's Laughing Now".
* TheGloriousWarOfSisterlyRivalry: The youngest of three sisters, Jessie J describes herself as the odd one out growing up with two academically minded sisters whilst being more inclined toward singing and arts.
* GodIsLoveSongs: "Thunder" is one of them, according to Jessie J herself.
* HiddenDepths: Before her debut single was released, she was getting praise from various other artists who described her as the "best singer in the world," " a musical genius," etc. Before becoming a solo artist, she wrote songs for Music/MileyCyrus, Music/ChrisBrown and Music/JustinTimberlake.
** Her debut single "Do It Like A Dude" was written for {{Rihanna}}.
* ImportantHaircut: For the better part of two years, Jessie J continuously stated she would shave her head for charity. What's interesting is when she did finally get around to doing it, [[MusicIsPolitics she was on the verge of a new album campaign]]...
* IntercourseWithYou: Under her real name of Jessica Cornish, she released a song called "[[http://www.youtube.com/watch?v=Y-NQY7cNjIc Sexy Silk]]", which is part of the ''Film/EasyA'' soundtrack. It definitely fits the trope.
* KeepCirculatingTheTapes: Her single "Nobody's Perfect" is, [[RefugeInAudacity for some bizarre reason]], [[DigitalPiracyIsEvil widely torrented since its release, especially on Demonoid]].
* TheLadette: "Do It Like a Dude" is centered on the "man-dem."
* ITasteDelicious: Video for "Who's Laughing Now".
* LingerieScene: Jessie's in black underwear for most of the "Wild" music video, but in an artistic context. Ditto for the single cover.
* MelismaticVocals
* NoExportForYou: ''Alive'' was never released in America. It was planned to be released in America for some time, but it was eventually cancelled when ''Sweet Talker'' came out.
* PrecisionFStrike: Although Jessie J already curses in both "Do It Like a Dude" and "L.O.V.E.," she drops an F-bomb in the otherwise clean "Nobody's Perfect" for good effect. In recent live versions however, she goes for a PG version.
* SelfEmpowermentAnthem: "Who You Are" is about being okay to be hurt, as long as you BeYourself.
* SingerNamedrop: "J-J-J-Jessie J!"
* SheCleansUpNicely: When going to award shows she has shown that she can [[http://en.nkfu.com/wp-content/uploads/2011/07/jessie-j-3-195x300.jpg clean]] [[http://www.exposay.com/celebrity-photos/jessie-j-jessie-j-visits-newmusiclive-toronto-dLZ0bf.jpg up well]] as opposed to her usual [[http://assets1.gcstatic.com/u/apps/asset_manager/uploaded/2011/02/jessie-j2-1294949427-view-1.jpg unkempt]] [[http://static.nme.com/images/gallery/JessieJPR270111.jpg look]].
* SurrealMusicVideo: ''Nobody's Perfect'' has clear ''Literature/AliceInWonderland'' influences, along with a room of clocks, Jessie in black glunk, and other surreal scenes.
* TakeThat: The whole point of "Who's Laughing Now?" at former classmates.
** She also made a TakeThat at Birmingham City Council on her social networking pages, although there is doubt over the authenticity of the TakeThat at them.
* TrueCompanions: She is best friends with fellow British singer Music/{{Adele}}, with whom she went to school with.
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