Justin Bieber's plan to show a grown-up side in his music videos seems to be working. The singer's [article id="1684446"] latest entry, "Boyfriend,"[/article] has broken a YouTube record for single-day stats, meaning that lots and lots of people peeped the clip.

Within 24 hours of the video's release on Thursday, it had racked up a whopping 8 million views on the site, according to The Hollywood Reporter. And as of press time, the video had gained more than 17 million streams -- all that in under a week!

Bieber and his pals hang out in a parking lot filled with muscle cars in the new video. But in addition to popping and locking, Justin also snuggles with a female co-star. When he sat down with MTV News to talk about the [article id="1684418"]Director X-directed video[/article], he opened up about casting his lovely video girl, Rachel Barnes.

"They picked two girls based on the pictures, then they came and then we picked the best one who looked best on camera. It was kind of a group thing 'cause she was really beautiful and on camera it was this cool vibe," Bieber revealed. "She looked kind of like Pocahontas."

Over the weekend, Barnes chatted with TMZ and said that while she and Bieber have chemistry in the clip, in real life she married her husband in 2011.

"Justin and Selena are adorably inseparable and I, myself, am already married. I'm a Belieber, but he's not my boyfriend," she told the site. "It's been great to be a part of the Bieber madness ... even if only for a song."

Bieber took some time off from promoting "Boyfriend" to chill with [article id="1684542"]skating buddy Lil Wayne[/article] and 50 Cent in Las Vegas, where they cheered on Floyd Mayweather Jr. as he beat Miguel Cotto.

"In and out of vegas for the fight. now back for rehearsals tomorrow," he tweeted over the weekend. "Goodnight world. hard work and dedication."

The Biebs will be rehearsing for an appearance on "The Voice" this week. He's set to perform the lead Believe track on Tuesday's finale show.

What do you think of Justin's "Boyfriend" video? Tell us in the comments!