I will have to Say Alicia Keys! She is a consistent album seller even tho her latest album sold around 700 plus copies in the US and about 2 million worldwide she still sold more than most new generation acts. Her album As I Am still has the record of best selling first week female R&B album with 742k copies! And not taking MJB's place because she still the Hip-Hop/Soul Queen but I have to say that Alicia is the R&B Queen. If this was back in the day I would Say Mary J Blige. But Alicia kinda broke more records than MJB, Shes got 14 Grammy's last decades Billboard top R&B female artist! She defo must be named the R&B Queen because it was already attributed a title to MJB. About Beyonce, Sorry but shes way more pop tan R&B and this is coming from a member of The Hive, Beyonce is my queen my goddess my style icon music icon my everything she gives me life back when I need it and have been in all her concerts in other words I stan for her. But in this one I must Say Alicia wins because she is pure R&B!!!