Justin Bieber and Miley Cyrus - PARTY IN THE USA 

Miley is so underappreciated she’s honestly a legend

Fangirls were so different back then. The cameras, writing our faves name on our faces and DIY shirts. The crowd is so colorful. now we just put on our best outfits and record with our phones without watching the show lol.

2009: party in the USA 2020: CORONA IN THE USA

When everybody use to have a digital camera!! Dead

I loved this Miley, loved Miley at 2013, love the new Miley, and i will always love Miley ❤

Remember when people had cameras

Man, Justin was great in that song!! 😍😂😂

They were the king & queen pop icons of teens that era, PERIOD

it's hard to control your voice when you are moving...but they..are really...AWESOME!

I remember watching this over and over again when i was younger lol

The only reason why people don't think anything about her outfit is because she had long hair

I miss the friendship that they had once..

Actually, I think she has the perfect rockstar voice. That raw rock n' roll sound. And in a way it also sounds very Shania. Love it. Go Miley. =)

Miley cyrus and Justin Bieber should make a song together ! That would be amazing! They are my two favourite celeberties

She looks so stunning

Most beautiful woman in this world , Miley 😘😍😍

She's looks so pretty !

She did not change 2:48 :D

I hate when people say 'she was so beautiful' she still is! Jeeeez!

2:48 ese perreo Miley *-* Hasta abajo!! jsdjksnkjdjjskj

I would be screamming my head off if i would have been there! Miley you are amazing

Here for the legend JB👑 And i love u Miley💜

Miley Cyrus is the Hollywood best singer and best actress of the world.

Forever favourite singer.. Love you Miley ❤😘

When she says "And the JB song is on" I think of Jo' bros,... Awww xD

I'm sorry but I always thought that little dance she attempted doing at 2:48 was hilarious 😂 seeing her trying to dance like that is so funny. 😂😂😂

Miley Cyrus your song is 🔥 your voice is amazing🎹🎧🎤🎤🎤🎤🥁🎸🎸🎸🎙️🎙️🎙️

she has always been crazy and i have always love her !! love u miley . Jiley all the way

This is the definition of talent :). Miley Cyrus is beautiful.

I didn't realize how damn beautiful she is

when smartphones not so mainstream back then hahahah

When everyone was freaking out about how "inappropriate" she was during this, hahahahaha.

Very few artists manage to dance while sing. U r my fav miley

Que hermosa época 🥺 sana, llena de grandisimas emociones. Me pone muy feliz y nostálgico volver a ver este video 😢

i love her so much

Ohhhh I miss those days that we are teenage too. No smartphone...But digital camera and enjoy alot in concert

MY BABYS JUSTIN AND MILEY

2:48 Hahahahahahahahahahah i can't get enough of this!!

They all did awesome !!

She looked and sounded great here!!!! 💖

Beliebers adore Miley and Smilers adore Justin.

Miss Miley , I have got to tell you, I have seen you grow up cause im a little bits lol older , ive loved your expressions and I've got to tell you I am super PROUD of you and all the accomplishments you've achieved and ur creativity.. I can go on for. little longer (sorry I'm blitzd lol) but my jist is Don't ever let anyone's haterizm get you down and I am super duper proud of you. You are beautiful baby girl! thanks for sharing your moments with the rest of us . ur awesome !! be safe and take care ! Peace

Man 2010 was such a great year miss this times

My favorite song of the world

Que épocas cuando creíamos que todos ellos eran amigos ( Miley, Justin, Selena, Demi)

Miley Cyrus is the Guinness book of the world record world best singer and best actress of the world I real God declared that.

Justin and miley are perfect and the best people in my life

Woo.....beautiful song of the world

miley como esta bestida woouuu despues de todo si nos adbirtio esa es una muestra pequeña de lo q es hoy

she is singing very well live!! Great video Miley and Bieber :D

No matter what no!!! Matter what Miley back Miley now steals my heart still love you miley

i loved this miley love miley at the song love the new miley and i wiil always love miley,thank you so much

the best performace

anything has change with her!!! just long hair but i still love her since hannah montana until today

miley is an legend she is the best af all time go girl

I love the miley ! Miley is the best ! she has style ! she is best best and beautiful

Dammnn she can really hit those high notes!

omg i was there for this performance! shit i feel like it was just last summer! love love LOVE her live! she's amazing loved her then and still do!

this is so iconic it almost physically hurt lmfaaoo

LUV ur hairstyle nd outfit Milley x

Justin!

i love my miley cỷus in 2019

love you Miley and Justin

i love this song so so so so so so so much

Jiley is perfect. (:

2 idol - Justin & Miley

Omg i remember this concert and i love it💗💗

You go girl, awesome swag!!!!

best thing ever

You know Bieber was hittin' that to show up at a performance and NOT sing

Ilove Miley so much 💔💔 tobe continue 💝💝💝💝2012

Loved this.

Miley was so so pretty 😍 wow

see the difference between her and selena, miley is obviously better. shes dancing while singing. what a talented girl!!! and bieber, i love you too, you and miley are talented, blessed people...

faves

AMAZING! gave me goosbumps!! eveyrtime i hear mi sing i get goosbumps!! ILY MI!

She was already changing from 2009 to 2011 but she waited until the show ended on 2011 when she fully changed and twerked on the world in 2013 :D

except this party was in Canada

i love thi song very much...!i love you MILEY....!

shes awesome!

OMG MIS ÍDOLOS JUNTOS :'33 COMO EN OVERBOARDD

yeah.. mileys changed but i still love her - shes my idol forever and always:)

ROCKSTAR 👩‍🎤 🇺🇸 🎵 🎸 HITS 🎵

Love it🎶🎶🎶❤️❤️❤️

Wow the girl at 0:08 with black hair holding the camera is so gorgeous So is the dark-haired girl to her right hand side, clapping next to her

both r amazing

That is a good cameo !😂👏

Miley Cyrus is AN ICON!

Jiley

I miss old miley she was soooo beautiful.

😍😍😍😍😍😍😍 Miley and Justin😍😍😍😍

2:04: Haha with Justin Bieber. Miley sings "And the JB Song was on!" 😍😍😍I Love JB😍😍

2020?!!! ❤️🥵

what's the point of jb appearance in this performance?

This was a really good performanc, her high notes at the end were awesome.

OCTOBER 2019???

i really miss this mily Cyrus

Awesome song of the world

She's so beautiful!

Miley looked so good here. 😍 She seemed like she enjoyed singing her older songs. Unlike now, she seems disinterested. 🤷