Justin Bieber

Justin Bieber performs at Hyde Park on July 2, 2017 in London.

Samir Hussein/Samir Hussein/Redferns

Also, chart moves for Justin Timberlake & JBJ.

One sure thing about Billboard’s Social 50 chart: When Justin Bieber takes off his shirt, you’re going to see results.

The singer leaps 17-6 on the Jan. 20-dated Social 50 tally with 10.4 million Instagram reactions in the week ending Jan. 11, according to Next Big Sound, a majority of which came from a shirtless photo of Bieber posted to the service on Jan. 6.

The Social 50 is powered by data tracked by music analytics company Next Big Sound and ranks the most popular artists on Facebook, Twitter, Instagram, YouTube, Wikipedia and Tumblr. The chart's methodology blends weekly additions of friends/fans/followers along with artist page views and engagement. The chart’s latest tracking week ended Jan. 11, and BTS is No. 1.



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“Wowzers,” Bieber captioned the photo, which featured the shirtless singer seated and reading. An additional post in the tracking week, a screenshot of a 2014 Kanye West tweet (where the rapper wrote: “Not smiling makes me smile”), also drove likes on his page, gathering a 188 percent boost in likes overall, as well as 265,000 new followers.

Further down the chart, the release of the new single “Filthy” drives another Justin up the Social 50, as Justin Timberlake leaps 49-13.

Timberlake, who garnered 305,000 YouTube reactions and 94,000 new subscriptions thanks to the “Filthy” video (both the song and video were released on Jan. 5), scores his best position on the tally since the Nov. 19, 2016, ranking, when he reached No. 4.

In addition to promoting his new single, Timberlake also announced a new tour and posted from the 2018 Golden Globe Awards, at which his wife, Jessica Biel, was nominated. One video in particular showed Timberlake and Biel singing along to “Filthy” while en route to the ceremony.

Meanwhile, K-pop act JBJ debuts on the Social 50, bowing at No. 36 amid promotion of the act’s True Colors album (released Jan. 17). The six-piece act, which was formed last year from members of the second season of Mnet’s Produce 101 TV show, snagged 345,000 Twitter reactions and 27,000 mentions after posting multiple teasers and behind-the-scenes clips for the new album.