Demi Lovato has officially been named host of the 2012 Teen Choice Awards, EW reports.

The former Disney star and current "X-Factor" judge will take charge of the teen awards show, which promises a performance by Carly Rae Jepsen and appearances by Zooey Deschanel, the "Glee" cast, Ellen Degeneres, Kristen Bell and more.

Lovato re-entered the TV spotlight after she was named an "X-Factor" judge in May.

"I'm totally stoked to be here ... I'm excited to represent my generation and find the winner!" she said at the Fox upfront presentation, where the network revealed what's to come for the 2012-2013 TV season.

With a couple months of auditions behind her
, Lovato admits her judging duties aren't always easy. "It's really hard for me to smile if they're performing and they're horrible," she told Access Hollywood. "I have to be super super honest and sometimes I feel bad about it."

The 2012 Teen Choice Awards air on Sunday, July 22 at 8 p.m. ET on Fox.

Click through the slideshow below to see the second wave of Teen Choice Award nominees.

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  • Choice Movie: Romance and Choice Liplock

    <em>The Twilight Saga: Breaking Dawn -- Part One</em>, starring Rob Pattinson and Kristen Stewart. The celebs, who are also a couple off-screen, recently <a href="" target="_hplink">quit smoking</a>.

  • Choice Movie: Romance and Choice Liplock

    <em>The Vow</em>, starring Channing Tatum and Rachel McAdams. On June 29, Tatum stars in"Magic Mike, a comedy based on his past as a male stripper.

  • Choice Movie: Romance and Choice Liplock

    <em>The Lucky One</em>, starring Zac Efron and Taylor Schilling. <a href="" target="_hplink">Zac Efron recently split from Lily Collins</a> and is now back on the market.

  • Choice Liplock

    Jennifer Lawrence and Josh Hutcherson in <em>The Hunger Games</em>. We hope <a href="" target="_hplink">Nicholas Hoult</a>, Lawrence's British BF, wasn't jealous!

  • Choice Summer Movie: Action

    Catch <em>The Amazing Spider-Man</em>, starring Andrew Garfield and Emma Stone, in theaters on July 3!

  • Choice Summer Movie: Action

    <em>The Avengers</em> has an all-star cast featuring Robert Downey Jr., Chris Evans, and Scarlett Johansson.

  • Choice Summer Movie: Action

    <em>Snow White & The Hunstman</em>, starring Kristen Stewart, Charlize Theron, and Chris Hemsworth. We're guessing that even if Snow White loses this round, Kristen Stewart will still walk home with plenty of awards, thanks to <em>Twilight</em>.

  • Choice Movie Chemistry

    Jennifer Lawrence and Amandla Stenberg scored a nom for their inspiring friendship in <em>The Hunger Games</em>.

  • Choice Movie Chemistry

    The lovable bromance between Ryan Gosling and Steve Carell in <em>Crazy, Stupid Love</em> received a nod.

  • Choice Movie Villain

    Alexander Ludwig was nominated for his portrayal of Cato in The <em>Hunger Games.</em>

  • Choice Summer TV Show

    It's no secret, we're all hooked on the ups and downs of Amy, Ricky, and the rest of the cast -- no wonder <em>The Secret Life Of The American Teenager</em> was nominated as this summer's stand-out show.

  • Choice Summer TV Show

    Cat, Nigel, Mary, and the dancers of <em>So You Think You Can Dance</em> come together to create an addictive hour of TV perfect for summer.

  • Carly Rae Jepsen

    We're not psychic or anything, but we'll go ahead and guess that after reaching <a href="" target="_hplink">#1 on iTunes</a> and spawning <a href="" target="_hplink">dozens of parodies</a>, "Call Me Maybe" by Carly Rae Jepsen will take home the Choice Summer Song award.

  • Choice Love Song

    "What Makes You Beautiful" by One Direction. In one of our favorite video clips of the week, teens got into a heated debate over the British boy band.

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