There is a place called "Butter Tubs Pass" ("Buttertubs Pass").
Its not 12 letters but it does fit the clue.
B=Blonde UTTER=Passionate PASS=First seduction
There is a place called "Butter Tubs Pass" (or "Buttertubs Pass") but its not 12 letters.
However, It does seem to fit the clue.
B=Blonde UTTER=Passionate PASS=First Seduction