The 23-year-old 'Don't Wake Me Up' hitmaker is following in the footsteps of singers Fergie and Natasha Bedingfield and singer Keri Hilson, who are also signed to the agency's Artist Management division, reported Us magazine.
Wilhelmina agents will seek fashion and beauty endorsements and licenses for Brown, who was famously dropped from his campaigns for US pro-dairy group Got Milk and Wrigley's chewing gum after he was charged and convicted of assaulting then-girlfriend Rihanna in February, 2009.
Taylor Hendrich, director of Wilhelmina Men, said, "Brown is a multifaceted artist with a unique take on style. We are excited to translate and extend his brand."