Stars participating in trashy drama (5)
I believe the answer is:
hydra
'stars' is the definition.
(I know that Hydra is a stars)
'participating in trashy drama' is the wordplay.
'participating in' indicates the answer is hidden within the clue.
'HYDRA' can be found hidden inside 'trashy drama'.
(Other definitions for hydra that I've seen before include "Proliferating-head monster" , "Multi-headed monster killed by Hercules" , "Multi-headed monster slain by Hercules" , "Mythological monster with nine heads" , "Many-headed serpent" .)