Superstar's current disadvantage (4)
I believe the answer is:
icon
'superstar's' is the definition.
(I've seen this before)
'current disadvantage' is the wordplay.
'current' becomes 'i' (symbol for electric current).
'disadvantage' becomes 'con' (as in pros and cons).
'i'+'con'='ICON'
(Other definitions for icon that I've seen before include "Symbol on computer screen or sacred picture" , "Idol" , "Image or figure venerated as sacred" , "Computer graphic symbol" , "Small image on computer screen" .)