I know there are plenty of well known male duets but not to many female but I have just been listening to The Soul Sisters Think about the good times on Sue and these two have amazing voices that have an awesome blend on this record and work so well together. This is a female duet at its best IMO.

Take a listen on this link.

https://www.the44soulclub.co.uk/ss.mp3

Any other female duets that can rival this?

BARBARA & BRENDA IF IM HURT YOUL FEEL THE PAIN

BARABRA & BRENDA NEVER LOVE A ROBIN

DOTTIE & MILLIE ITS MY BABY

RICKY.

SOCK IT TO EM SHORTY.

Etta James and Sugar Pie Desanto " Do I Make Myself Clear "

Barbara and Brenda " Dont Wait Up For Me Mama"

I know there are plenty of well known male duets but not to many female but I have just been listening to The Soul Sisters Think about the good times on Sue and these two have amazing voices that have an awesome blend on this record and work so well together. This is a female duet at its best IMO.

Take a listen on this link.

https://www.the44soulclub.co.uk/ss.mp3

Any other female duets that can rival this?

I don't think these two can rival them for vocal strength but they were pretty instrumental in testing out vocals on tons of motown records before they were assigned to particular artists as well as backing singers and even had a couple of their own releases on VIP.

Helen & Kay Lewis - The Lewis Sisters

Also prolific songwriters - "Just walk in my shoes"

18_Don_t_Make_Me_Live_Without_Your_Love_The_Lewis_Sisters.mp3