Group of stars recalling number one for Lizzo finally (5)
I believe the answer is:
orion
'group of stars' is the definition.
(I know that Orion is a constellation)
'recalling number one for lizzo finally' is the wordplay.
'recalling' says the letters should be written in reverse.
'number one' becomes 'no i' (resembles No 1).
'finally' suggests the final letters.
The last letters of 'for lizzo' are 'ro'.
'noi'+'ro'='noiro'
'noiro' in reverse letter order is 'ORION'.
(Other definitions for orion that I've seen before include "Hunter slain by Artemis" , "Constellation in the form of a belt" , "Group in heaven" , "One who would hunt" , "Greek hunter of myth or bright constellation" .)