It’s State Dress? (4)
I believe the answer is:
sari
'dress?' is the definition.
(sari is a kind of dress)
'it's state' is the wordplay.
'it' becomes 'sa' (old-fashioned abbreviation for sex appeal).
'state' becomes 'ri' (Rhode Island abbreviation).
'sa'+'ri'='SARI'
(Other definitions for sari that I've seen before include "Traditional dress of Indian women" , "Asian dress" , "Eastern garment" , "Something worn" , "Indian costume" .)