I'm so funny in fancy lace garment (8)
I believe the answer is:
camisole
'garment' is the definition.
(camisole is a kind of garment)
'i'm so funny in fancy lace' is the wordplay.
'funny' indicates anagramming the letters.
'in' is an insertion indicator.
'fancy' is an anagram indicator.
'im'+'so'='imso'
'imso' is an anagram of 'miso'.
'lace' with letters rearranged gives 'cale'.
'miso' going inside 'cale' is 'CAMISOLE'.
(Other definitions for camisole that I've seen before include "Close aim (anag.)" , "item of underwear" , "Short sleeveless undergarment" , "woman could wear it" , "Underbodice with shoulder straps" .)