Sticker help: ''Parts shop'' equip a mod and win an event???

#1R_O_B_SentryPosted 2/2/2014 12:22:53 PM
I have unlocked every mod and beaten single race and some events and I'm still not getting this sticker despite me changing drivers and mods!

What am I doing wrong or how is it supposed to be unlocked?
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Hi ! I'm Omochao. @_@ ) I'm here to help you.
Ah... My, my... <3 I foresaw your arrival, Mario. -- Merluvlee, Paper Mario