"American Idol" reject Lilly Scott doesn't want to become another Adriel Herrera -- and has her post-"A.I." bar set high ... Jennifer Hudson high.
Lilly was walking around W. 3rd Street in L.A. with fellow "Idol" wannabeen Alex Lambert -- when she told us she will be doing "big things" and she's aiming for Daughtry or J-Hud level success.
FYI -- Hudson placed 7th, Daughtry was 4th ... Lilly didn't even crack the Top 12.
