clarification?

on why lady gaga is such a success? from what i've heard, her pop songs sound completely run of the mill. catchy lyrics? p-p-p-p-pok nevermind... is it her outrageous fashion? all i can remember is a heavy endorsement from perez, and boom she was everywhere. in some respects, i guess i have give her props for being pretty unconventional-looking and making it so big.