Leo possibly stirred tsar's gin (4,4)

I believe the answer is:

star sign

I'm a little stuck... Click here to teach me more about this clue!

'leo possibly' is the definition.
(I know that Leo is a star sign)

'stirred tsar's gin' is the wordplay.
'stirred' indicates anagramming the letters.
'gin' becomes 'sign' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'tsar' is an anagram of 'star'.
'star'+'sign'='STAR SIGN'

Can you help me to learn more?

(Other definitions for star sign that I've seen before include "Astrological house" , "Virgin, for example" , "rude demand for famous autograph?" , "House representative" , "Zodiacal figure" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.