Justin Bieber showed his more grownup side during his performance on the first results show for "Dancing With The Stars: All Stars."

The hit dance competition show which premiered this week, gave way to the 18-year-old in the second half of the episode to let "Biebs" perform his new single "As Long As You Love Me."

Bieber kept his young fans up late on Sept. 25 to offer more crotch-grabbing and gyrating than usual in a head-to-toe leather outifit. He ended his performance with an intense stare into the crowd, which was reminiscent of shows by his mentor Usher and the late Michael Jackson.

Bieber's all leather outfit was deemed questionable in several reports.

Several contestants spoke to E! to give their feedback on his look and live show.

"I was not a Bieber fan, but he won me over," dance partner Tony Dolovani told E!

"I especially appreciated Bieber's last look of his performance - it was a special moment," added Derek Hough.

When Hough was asked what he thought of the "Baby" singer's outfit, he replied, "It was pleather, man. We don't wear leather. I'm wearing one next week."

On Sept. 24 Bieber promoted his appearance on "DWTS" to his near 30 million Twitter followers.

"Rehearsals for #DWTS" tweeted Bieber. He posted a goofy picture of himself to the tweet with his wardrobe stylist Ryan Good.

The first results show of ABC's "DWTS: All Stars" kicked off Tuesday featuring performances by Bieber and rapper Pitbull .

The first couple eliminated; Pamela Anderson got the lowest score Monday night during the premiere of the All Stars season. To the surprise of many fans, the "Baywatch" star was eliminated before Bristol Palin. Anderson only garnered 17 points while Palin received 19.5.

"I was ready for it for sure, we got the lowest score, but we'll keep dancing, it doesn't end here," Anderson said after the elimination. "Thank you," she said looking obviously sad.

12 couples out of the 13 remain in the competition after Pamela and Tristan were eliminated. 

"Dancing With The Stars: All Stars" airs Mondays and Tuesdays at 8/7 c on ABC.

Watch Justin Bieber's performance on the results show below.