Unlock the following alternate costumes by performing the corresponding task:

ALTERNATE COSTUME - HOW TO UNLOCK
Amanda (winter) - Complete Kazakhstan in Time Trial mode.
Amanda - Complete Ghana in Time Trial mode.
Biker (no jacket) - Collect all silver and gold rewards in England.
Biker (red jacket) - Collect all silver rewards in England.
Biker - Complete England - King Arthur's Tomb.
Catsuit - Collect all gold rewards in Japan.
Classic (gray) - Collect all gold rewards in Ghana.
Classic - Collect all gold rewards in Peru.
Evening (red) - Collect all silver rewards in Japan.
Evening (ripped) - Complete Japan - Meeting With Takamoto.
Goth (laced shirt) - Complete Japan in Time Trial mode.
Goth - Complete England in Time Trial mode.
Legend (black) - Collect all silver rewards in Croft Manor.
Legend (blue) - Collect all silver rewards in Peru.
Legend (pink) - Collect all silver rewards in Ghana.
Legend (Union Jack) - Collect all silver rewards in Bolivia.
Snowsuit - Collect all gold rewards in Nepal.
Special Forces (urban) - Collect all gold rewards in England.
Special Forces - Collect all gold rewards in Kazakhstan.
Sport (green) - Complete Bolivia in Time Trial mode.
Sport - Collect all gold rewards in Bolivia.
Sport - Collect all gold rewards in Bolivia.
Suit (cream) - Collect all silver and gold rewards in Croft Manor
Suit - Collect all gold rewards in Croft Manor.
Winter (no coat) - Complete Kazakhstan - Project Carbonek.
Winter (no coat, orange) - Collect all silver rewards in Kazakhstan.
Winter (orange) - Collect all silver rewards in Nepal.
Winter (pink) - Complete Nepal in Time Trial mode.
Winter (pink, no coat) - Complete Peru in Time Trial mode.
Winter - Complete Kazakhstan - Project Carbonek.