"Sam & Cat's" Ariana Grande is certainly making an impression these days. Last month, "X-Factor's" Demi Lovato had nothing but praises for the red-head singer. Now, it looks like even Justin Bieber's manager is fairly impressed with the songstresses' vocal prowess.

The Nickelodeon star, Ariana Grande, is finally getting the attention she deserves. Apart from starring in her own show, "Sam & Cat", Grande is showing off her singing skills. Recently, Grande had performed at the "Wango Tango" show where Demi Lovato was also set to perform. Both stars took to the stage to perform and surprisingly, Lovato was quite impressed by Grande.

"She has vocals that are just unbelievable, and I have so much respect for her because she is a true singer. She's someone that I feel like is going to have a long career because of her voice, and I think she's going to be a huge name. She's gonna be great," stated Lovato.

Demi Lovato isn't the only star that has got great things to say about Grande. In an interview with Justin Bieber's manager, Scooter Braun is clearly obsessed with Ariana Grande. Braun is the manager to other successful stars such as Psy, Carly Rae Jepsen and the Wanted.

"She reminds me of both Mariah [Carey] and Christina [Aguilera]. Christina was this young, petite girl with this gigantic voice and Ariana kind of has the same thing," says Braun in an interview with MTV, adding, "And her tone and her range remind me of Mariah."

How exactly did Braun come across Ariana Grande?

"I kept seeing this girl online. And I knew she had a show that she was involved in on Nickelodeon, ['Victorious,'] and I would see her at different award shows and there was something very charismatic about her. I started watching videos and I started getting blown away by what an incredible voice she had," explained Braun, adding, "There's kind of a natural beauty about her and this charisma that make you gravitate towards her. She kind of has this warmth that makes you want to root for her, and that's what you want with an artist. The fact that she has ridiculous vocal range, it was incredible and that she can do it live."

"The thing about Ariana is she has that charisma and star [power]. The one thing about her, if you don't know, is she can really dance. And she hasn't shown that side yet. [She] really blew me away in rehearsal one time. But the thing that's exciting is the voice and what she can do with it. With a voice like that you can have a very long career because you can always sing," continued Scooter.

Ariana Grande sure has impressed one of the biggest talent managers in Hollywood. For one, Braun is sure to make an even bigger star out of Ariana. In fact, Ariana is set to be the opening act for Justin Bieber's upcoming tours. This will certainly get a lot of "Arianators" talking.

"She's so little and petite - when she opens her mouth it's kind of unbelievable that it's coming from this little person," stated Braun.

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