Top fashion designer touring Georgia (8)
I believe the answer is:
cardigan
'top' is the definition.
(I've seen this before)
'fashion designer touring georgia' is the wordplay.
'fashion designer' becomes 'cardin' (I've seen this before).
'touring' indicates putting letters inside (touring can mean going round).
'georgia' becomes 'ga'.
'cardin' going around 'ga' is 'CARDIGAN'.
(Other definitions for cardigan that I've seen before include "One making ridiculous charge" , "town in Wales" , "clothes item" , "location of Welsh bay" , "Woollen garment" .)