Celebration with heavenly food brought round for pop star (7)
I believe the answer is:
madonna
'pop star' is the definition.
(I've seen this before)
'celebration with heavenly food brought round' is the wordplay.
'celebration with' becomes 'do' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'heavenly food' becomes 'manna' (as in manna from heaven).
'brought round' is an insertion indicator.
'do' put inside 'manna' is 'MADONNA'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for madonna that I've seen before include "American pop singer" , "Like a Virgin singer" , "US female singer" , "Guy's girl" , "Virgin Mary; singer" .)