A few days ago, Troye Sivan revealed that his new album, Wild, will be released before the end of 2015. And he made that announcement, of course, via YouTube at VidCon -- essentially the Comic-Con of vloggers and web video personalities.

It's a fitting way to drop the news since Sivan, whose last EP shot up to number two on the Billboard 200 chart last year, has built up a fan base almost exclusively through his YouTube channel since 2007. That kind of success arc used to be a novelty, a quirky trend reported on by The New York Times. But now, it's a reality.

And because YouTube has been around for over a decade now, we have a plethora of examples to prove it. Here are our favorite YouTubers who leapt from our computer screens into the throes of real success.

Adore Delano

Adore Delano began in earnest, belting out Jason Derulo covers in what was probably a bathroom. But those impressive pipes led to appearances on "American Idol" and "RuPaul's Drag Race" -- and a debut album, Till Death Do Us Party, hitting 59 on the Billboard 200 in 2014.

Austin Mahone

Before the "Dirty Work" singer was breaking hearts on VEVO and charting on the Hot 100, he was singing happy birthday to girls at their quinceañeras and goofing around with his vlogging pals just five years ago. They grow up so fast.

Christina Grimmie

Once known on YouTube as zeldaxlove64, Christina Grimmie is now known for her show-stopping performances on "The Voice," where she landed a record deal that helped her 2013 album, With Love, crack 101 on the Billboard 200.

Darren Criss

While not a pavement-hitting YouTuber -- he also had performed with California's 42nd Street Moon since the late 1990s -- Darren Criss did indeed post a few acoustic covers from his bedroom long before landing on "Glee" or, most recently, in "Hedwig And The Angry Inch."

Greyson Chance

Five years ago, Greyson Chance took Lady Gaga's "Paparazzi" to new heights with this bellowing piano cover (he was in sixth grade, FYI). Shortly after, his major-label debut, Hold On 'Til The Night, debuted at 29. Because, like, LISTEN.

Karmin

It all started with a simple take on Chris Brown's "Look At Me Now," which racked up tens of millions of views for its inventive style and high production quality. Karmin parlayed that success into a slot on "SNL" and two singles that climbed to No. 1 on the U.S. dance charts.

Rebecca Black

Whether or not it's actually a "bad" song is irrelevant. "Friday" took Rebecca Black to No. 1 on the Billboard Heatseekers Songs (and 53 on the regular 100). So take THAT, haters!

Straight No Chaser

In one of the weirder tales of the digital age, a member of a cappella group Straight No Chaser uploaded this video in 2006 (though it was filmed in 1998), and it promptly blew up. Instead of fizzling out after a few weeks, though, Atlantic Records signed the group to a five-album deal -- and the first four released have all charted.

Soulja Boy

In addition to being the most 2007 thing ever, Soulja Boy's "Crank That" took the pop world by storm -- a cyclone that kept the song at No. 1 for a staggering seven consecutive weeks, you guys. And it all started, as things tend to do, with this goofy, quirky, low-quality YouTube vid.

Tori Kelly

Tori Kelly's golden teenage pipes carried her from the web to "American Idol" tryouts and, in 2013, to Capitol Records. Her debut, Unbreakable Smile, debuted at No. 2 on the Billboard 200 in June. You go, Tori.

Justin Bieber

WE. WILL. NEVER. EVER. FORGET.