A pimp who brought an underage girl to Chicago and forced her to work as a prostitute faces at least 10 years behind bars after pleading guilty Friday in federal court.

Sex trafficker Carl Brandon Smith — who went by the nickname “Moo” — met the teenage victim in Lake Geneva, Wis., and asked her to move to Chicago to be his girlfriend.

But a week after she arrived in February 2011, she was forced to prostitute herself by Smith, 25, according to a plea agreement.

Smith controlled the teen and other women who worked for him — including a second underage victim — with violence and threats to kill, the plea deal states.

He faces 10 years to life in federal prison when he is sentenced in April.