Girls' Generation's Tiffany shows off the group's Video of the Year award.
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Korean press interviews Girls' Generation's Tiffany after the group won Video of the Year.
Image: Mashable's Christina Ascani
Girls' Generation's Tiffany poses with the group's Video of the Year award.
Image: Mashable's Christina Ascani
DeStrom smiles after winning Innovation of the Year.
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DeStrom talks about winning Innovation of the Year.
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Lindsey Stirling flaunts her Response of the Year trophy.
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Lindsey Stirling shows off her accessory in the press room.
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Tay Zonday joins CDZA in the press room.
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CDZA performs in the press room.
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CDZA laughs after performing.
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CDZA addresses the media.
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Vanessa Hudgens chats up the press after taking part in a "live music video" during the YouTube Music Awards.
Image: Mashable's Christina Ascani
Vanessa Hudgens chats up the press after taking part in a "live music video" during the YouTube Music Awards.
Image: Mashable's Christina Ascani
Image: Mashable's Christina Ascani
Image: Mashable's Christina Ascani
Image: Mashable's Christina Ascani
Co-host Reggie Watts entertains the media.
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Co-host Reggie Watts's shoes.
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Co-hosts Reggie Watts and Jason Schwartzman recap what the hell happened to them during show.
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Co-hosts Reggie Watts and Jason Schwartzman talk about the night's surprises.
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Co-host Jason Schwartzman goes home.
Image: Mashable's Christina Ascani
Image: Mashable's Christina Ascani
Image: Mashable's Christina Ascani
Korean pop group Girls' Generation benefitted from YouTube's social voting process for the first-ever YouTube Music Awards, winning Video of the Year over such music heavyweights as Lady Gaga, Justin Bieber, Miley Cyrus and One Direction.
"It still feels surreal," Tiffany of Girls' Generation told media Sunday when asked how it felt to have the group's "I Got a Boy" beat Lady Gaga's "Applause" video. "She was sitting right in front of me. I personally loved her video."
See also: How Spotify Engineered the New Music Economy
Unlike other awards shows, YouTube bypassed the entertainment experts who normally choose nominees, opting to determine nominees based on musicians' YouTube stats, including video views, Likes, comments and channel subscriptions. Then, the winners were decided by share counts for each artist's nomination video on Facebook, Google+ and Twitter, which essentially showcased which fan bases were the most dedicated.
The online-only voting process also helped YouTube-grown artists like violinist Lindsey Stirling, who along with a cappella group Pentatonix, won Response of the Year (the category recognizes the best covers, remixes and parodies).
"This award means quite a bit to me because I feel like one of those artists that was really born on YouTube," Stirling said. "I never fit the model of what an artist was, and YouTube was the only place that would accept what I did."
Here is the full list of winners and nominees for the show's six categories:
YouTube: "Honoring the best fan remix, parody or response video, these nominees represent the top 'unofficial' fan videos on YouTube based on your views, shares and other activity."
WINNER:
Lindsey Stirling and Pentatonix: "Radioactive"

Other Nominees:
Boyce Avenue (feat. Fifth Harmony): "Mirrors"
Jayesslee: "Gangnam Style"
ThePianoGuys: "Titanium / Pavane"
Walk Off the Earth (feat. KRNFX): "I Knew You Were Trouble"
YouTube: "Recognizing the YouTube trends the world could not escape from, nominees are based on the phenomena that generated the most fan videos."
WINNER:
I Knew You Were Trouble

Other Nominees:
Diamonds
Gangnam Style

Harlem Shake
Thrift Shop
YouTube: "Honoring the music world’s breakout new acts, nominees represent the artists who experienced the biggest growth in views and subscribers."
WINNER:
Macklemore and Ryan Lewis

Other Nominees:
Kendrick Lamar
Naughty Boy
Passenger
Rudimental
YouTube: "Starting with videos selected by an international panel of musicians, YouTubers and creative luminaries, we then selected the creative video innovations that resonated most with fans on YouTube, based on views, likes, shares and comments."
WINNER:
DeStorm: "See Me Standing"

Other Nominees:
Anamanaguchi: "ENDLESS FANTASY"
Atoms For Peace: "Ingenue"
Bat For Lashes: "Lilies"
Toro Y Moi: "Say That"
YouTube: "Honoring the world’s most loved music videos, these nominees represent the videos with the most fan engagement on YouTube over the last year.
"
WINNER:
Girls' Generation: "I Got A Boy"

Other Nominees:
Demi Lovato: "Heart Attack"
Epic Rap Battles of History: "Barack Obama vs Mitt Romney"
Justin Bieber (feat. Nicki Minaj): "Beauty And A Beat"
Lady Gaga: "Applause"
Macklemore and Ryan Lewis (feat. Mary Lambert): "Same Love"
Miley Cyrus: "We Can't Stop"
One Direction: "Best Song Ever"
PSY: "Gentleman"
Selena Gomez: "Come & Get It"
Youtube: "Honoring the acts YouTube fans have made stars, nominees represent the most watched, shared, liked, and subscribed-to artists on YouTube."
WINNER:
Eminem

Other Nominees:
Epic Rap Battles of History
Justin Bieber
Katy Perry
Macklemore and Ryan Lewis
Nicki Minaj
One Direction
PSY
Rihanna
Taylor Swift
To watch the performances from Lady Gaga, Eminem, Arcade Fire and more, click here.
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Image: Mashable's Christina Ascani