Demi Lovato (as well as the Jonas Brothers, David Archuleta and Allstar Weekend) was in New York City yesterday, August 28, to perform at the 2010 Arthur Ashe Kids Day held at the USTA Billie Jean King National Tennis. Here are pictures and videos of Demi performing:

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The Jonas Brothers Live in Concert tour stopped in New Jersey yesterday, August 27, to perform a concert. During Demi’s part of the concert, Travis Clark from the band We The Kings came on stage and performed the duet “We’ll Be A Dream” with Demi! Check it out:

The new episode of Sonny With A Chance called That’s So Sonny is premiering on Disney Channel this Sunday, August 29. The episode guest-stars Raven Symone! Check out this sneak-peek:

I have added 20 High Quality stills from Camp Rock 2: The Final Jam to the gallery!

Check out this super-cute video of Radio Disney interviewing Demi at the Camp Rock 2 premiere! In the video you even get to see Demi’s mom and dad! Check it out:

Camp Rock 2 premieres on Disney Channel in the US next Friday!

TeenHollywood: Demi, you’re on everything lately. TV guest shots galore.
Demi: If you would have told me three years ago that I would have been doing this much, I would have said, ‘no way’. But I’ve been working at this for while so it’s an honor.

TeenHollywood: What about returning to “Camp Rock”?
Demi: Going back to ‘Camp Rock’, we had such a great time getting to shoot the second movie. The first movie was really great but I think the second one, we all stepped up our game. The first movie was us all being new. It was our first movie basically. It was definitely mine and, this time around, I knew what to expect. I was a little bit more seasoned as an actress and I tried my best.

TeenHollywood: There is a great duet you have with Joe Jonas. Your characters are kind of mad at each other and walking and talking and really belting it out! How different was that from what you’ve sung with him before because it seems to have more feeling. It was really good.
Demi: Thanks! It definitely had more feeling. I think being friends with someone for years at a time you’re able to do that. If I had just met him, it might have been more difficult to play those emotions. Might not have been but we’ve gone through a lot; not just me and him but all three of the brothers. We’ve been through so much together since the first ‘Camp Rock’ and Joe and I have been best friends and had our ups and downs so it wasn’t hard to be able to relate to the song but, at the same time, it was a blast. I love being able to show my emotions through song and my acting. I’d play dramatic over comedy, I think, any day. I love doing comedy though.

TeenHollywood: Can you tell us a set secret from “Camp Rock 2″?
Demi: I wish we’d played more pranks but we were so focused. But there was one day where it started snowing and it’s supposed to be the summertime. It was snowing while I’m in a silk mini-dress, freezing cold at four in the morning! I was miserable. After that day I was like ‘You know, I can do anything now’. We were shooting in Toronto.

TeenHollywood: Yikes! Was doing the episode of “Grey’s Anatomy” to give you a transition into more dramatic roles? [In the episode "Shiny Happy People" Demi played a mentally troubled teen].
Demi: Well, I’ve gotten a ton of feedback on that which is really incredible. The reason I took that role was it was a great opportunity to show that I love playing dramatic characters but for me, it was being on my favorite TV show! They came to me with that role and I was like ‘No way. That’s my dream role to play a crazy schizophrenic person [she laughs]‘ so I was really happy to do it.

TeenHollywood: How did you get involved in the “Extreme Makeover: Home Edition” show?
Demi: They were huge fans of ‘Camp Rock’, the children on the show and they were so sweet, so adorable. Their parents are incredible and I bonded with that family in the short time that I was there. They’re from the South and my family is from the South so there is a bit of connection there. There was a moment where the dad started crying, then I started crying and everyone is crying. That was on camera but still I had such a great time. That opportunity came to me and I couldn’t pass it up. That show is able to change people’s lives.

TeenHollywood: So you didn’t have to actually help build a house did you?
Demi: No but I built a snowman. I’ve been honored to be a part of that.

TeenHollywood: Where do you want your career to finally go?
Demi: I’ve been touring and hopefully, in ten years, I would have proved myself as a musician, songwriter, singer/actress/director/producer/script writer. I want to do everything.

TeenHollywood: So are you the younger Barbra Streisand then?
Demi: [laughs] With a little Tina Fey thrown in

Ever have an embarrassing moment? Demi does too! Check out what Demi told Tiger Beat Magazine about how she threw up on the set of Sonny With A Chance:

“I had to wear a really tight, corseted princess dress for [the Real Princesses of New Jersey] skit on Sonny With A Chance. I didn’t realize that I had to shoot more of the scene later so I ate an entire Chipotle burrito for lunch and chugged two bottles of water. I had to squeeze myself into the dress and it was so tight that I threw up! I was like, ‘I don’t feel good,’ and I ran out and threw up in the parking lot! I twas funny, but I felt better later!”

Demi has been staying at the London Hotel in New York City for the past few days. She was photographed yesterday, August 22, as she left the hotel. Here are high quality pictures of Demi from yesterday: