Stars with capital supported by attorney (9)
I believe the answer is:
andromeda
'stars' is the definition.
(Andromeda is a constellation)
'with capital supported by attorney' is the wordplay.
'with' becomes 'and'.
'capital' becomes 'Rome' (capital of Italy).
'supported by' says to put letters next to each other (in a down clue, some letters hold up others).
'attorney' becomes 'D.A.' (abbreviation for District Attorney).
'and'+'rome'+'da'='ANDROMEDA'
(Other definitions for andromeda that I've seen before include "she was given a starring role" , "star group" , "princess barely chained to rock" , "Strangely, man adored the constellation" , "Legendary beauty" .)