Publicity group is taking care of pop singer and other divas (5,6)
I believe the answer is:
prima donnas
'other divas' is the definition.
'prima donnas' can be an answer for 'divas' ('prima donna' can be a synonym of 'diva'). I am not certain of the 'other' bit.
'publicity group is taking care of pop singer' is the wordplay.
'publicity group' becomes 'pris' (I can't justify this - if you can you should believe this answer much more).
'is taking care of' indicates putting letters inside.
'pop singer' becomes 'madonna' (I've seen this before).
'pris' enclosing 'madonna' is 'PRIMA DONNAS'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for prima donnas that I've seen before include "opera stars" , "divas" .)