Hot body that ultimately squeezes into short sari (4)
I believe the answer is:
star
'hot body' is the definition.
'star' can be an answer for 'body' (I have seen 'Celestial body' mean 'star' so perhaps 'body' could also mean 'star'). I'm not certain of the 'hot' bit.
'that ultimately squeezes into short sari' is the wordplay.
'ultimately' suggests the final letters.
'squeezes into' is an insertion indicator.
'short' means to remove the last letter.
The final letter of 'that' is 't'.
'sari' with its last letter taken off is 'sar'.
't' put into 'sar' is 'STAR'.
Can you help me to learn more?
(Other definitions for star that I've seen before include "Chaste, pure" , "Celebrated performer" , "Glamorous celebrity" , "Eg, Antares" , "Top-of-the-bill artist" .)