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rihanna performing "diamonds"
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katy perry changing her outfit 6 times performing "hot n cold"

lana del rey made "born to die"

lana del rey's iconic snl performance

lady gaga playing football and hanging out with kids in Brazil during her “Born this Way” tour

the weeknd released “trilogy”

fifth harmony formed at X factor

melanie martinez joining “the voice” and christina aguilera having a bit of a disagreement with adam levine over one of her performances

ariana grande posted one of her first youtube covers singing “die in your arms” by justin bieber

justin bieber drops a track about a woman who claimed he fathered her child

rihanna slaying the Victoria's Secret catwalk

beyoncé giving birth to grammy winner Blue Ivy

taylor swift and harry styles are dating

taylor swift and harry styles dancing at the after party of one direction’s MSG show

gangam style becomes the most watched youtube video, surpassing “baby” by justin bieber

nicki minaj drops "starships"

madonna collaborates with nicki minaj and m.i.a on “give me all your luvin”

madonna headlines the superbowl

breaking dawn part 2 traumatizing everyone with this scene

"the hunger games" film saga starts

andrew garfield and emma stone star on "the amazing spiderman"

the movie "project x" set new bar for house parties

carly rae jepsen drops the song of the summer

selena gomez, justin bieber, ashley tisdale and other celebrities post a viral clip to the song

some people think the world’s gonna end because of doomsday speculation and many different films had been anticipating the year

the mustache trend took over

taylor swift released “i knew you were trouble” with rumors about harry styles break up going on

shawn mendes starts posting covers on youtube

austin mahome starting his music career after having been discovered on youtube the previous year

bridgit mendler drops hurricane

miley cyrus posts her cover of dolly parton’s “jolene” to her youtube channel, amassing over 400 million views over the years

britney spears’ iconic british accent on “scream and shout” featuring will i am

the mustache trend being part of the hipster style wave that even celebrities like taylor swift hopped onto

there was also swag era going on, Zendaya head swagger

Miley Cyrus and Demi Moore were on a movie called "LOL"

icona pop and charlie xcx release "i love it'

LMFAO apologizing for party rocking the whole of 2011

one direction released "take me home"
