Justin Bieber had a rough show in Arizona over the weekend when he threw up on stage, but it seems like his two shows at the Staples Center in Los Angeles went without a hitch!

"LOS ANGELES!! I LOVE YOU!! THANK YOU!! ....next stop!" Justin tweeted after Wednesday night's show -- and he wasn't the only one showing the Believe tour some love! Lots of celebs came out to support Justin -- read what they had to say on Twitter!

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Khloe Kardashian took her sisters Kendall and Kylie Jenner to the show, and although the girls are likely Beliebers also, they've always shown their support for Justin's opening act Cody Simpson.

"Wow. 's show was amazing! The opening with the wings! " - @kyliejenner

"AAHH !!! AHH," - @kendalljenner

It looks like Katy Perry took a pretty big crew with her to the show -- and they totally dressed in Bieber fashion! "WE ARE BELIEBERS!" she wrote with the pic.

"Last night I saw The Black Keys, tonight I saw Bieber. I think my musical week is complete," - @katyperry

And Girls creator/star Lena Dunham tweeted up a frenzy with Judd Apatow's teenage daughter Maude in tow. (Heh, see what we did there?)

Lena tweeted this pic with the caption, "Waiting for JB (A play by Samuel Beckett)"

She live tweeted much of the event. Our favorite tweet of hers? "Never Say Never (to attending a Justin Bieber concert even if you have the soul of a fat goth)," -@lenadunham

" you were great!" - @heidiklum

"Okay Grimmie. What did yu learn tonight. Never go to a Justin Bieber concert without earplugs. Oh my word." - @therealgrimmie

"Bieber Fever!! Oldest people here by a MILE! Hahaha! I feel ancient!" - @molliethesats

So it looks like the Biebs doesn't just draw a tween crowd -- he's got some of the biggest [adult] names in Hollywood flocking to his show. Impressive, JB.

Will you be attending Justin's tour?!

Photos Courtesy of: Twitter & Getty Images