Ravenous celebrity, Violet needs good sources (8)
I believe the answer is:
starving
'ravenous' is the definition.
(I've seen this before)
'celebrity violet needs good sources' is the wordplay.
'celebrity' becomes 'star' (I've seen this before).
'violet' becomes 'vi'.
'sources' suggests taking the first letters.
The initial letters of 'needs good' is 'ng'.
'star'+'vi'+'ng'='STARVING'
(Other definitions for starving that I've seen before include "Ravenous, really hungry" , "feeling famished" , "Dying of hunger" , "Suffering from lack of food" , "certainly not scoffing" .)