16 across
Supporter
following
most
of
top
stars
(5)
Supporter following most of top stars (5)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at stars at the end — that's your definition, the zodiac constellation. For the wordplay, take most of top: the word "lid" (a top) with its last letter removed gives you LI. Then supporter gives you BRA, which follows on behind, and together they make the answer.