Female Vocal Ranges?

Question

What are some of the biggest vocal ranges that women have had? I know Julie Andrews had a range of 4 octaves, but what notes to what notes? And has anyone surpassed 4 octaves? What's the highest note a singer has hit well? (Please answer these in reference to female singers.)

Answer 1

I'm not sure, but there was an urban legend that Mariah Carey had a 7 octave range