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Justin Bieber's personal trainer joins 'Biggest Loser'

Dolvett Quince will join the NBC series as a trainer on its twelfth season, set to begin production this week.
/ Source: Us Weekly

From training the Biebs to "The Biggest Loser"!

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Justin Bieber

The teen sensation got his start when his proud mom uploaded his videos to YouTube. Now he’s poised to rule the pop world.

Justin Bieber's personal trainer, Dolvett Quince, will join the NBC series as a trainer on its twelfth season, set to begin production this week.

EXCLUSIVE PHOTOS: Justin Bieber's workout routine

"I couldn't be more excited about joining 'The Biggest Loser' as their newest trainer," the Atlanta-based trainer, who also counts Janet Jackson as a client, tells Us Weekly in a statement. "This amazing opportunity allows me to use my expertise to change lives one rep at a time, and encourage contestants -- and viewers -- to find strength beyond muscle."

PHOTOS: Shocking Biggest Loser transformations

Quince (seen at left working out with Bieber during a Dec. 16 tour stop in Greenville, N.C.) also designed a fitness and diet plan for the 17-year-old singer for his "My World" concert tour.

"The Biggest Loser's" new season, set to air in September, will also feature newbie trainer Anna Kournikova and veteran Bob Harper.