Speaking, forbade reflective girl to wear this? (8)
I believe the answer is:
bandanna
'wear this?' is the definition.
(type of item of clothing)
'speaking forbade reflective girl' is the wordplay.
'speaking' indicates a 'sounds like' (homophone) clue.
'forbade' becomes 'banned' (banning is a kind of forbidding).
'reflective girl' becomes 'Anna' ('Anna' is a palindrome).
'banned' is a homophone of 'band'.
'band'+'anna'='BANDANNA'
'to' is the link.
(Other definitions for bandanna that I've seen before include "scarf" , "Large and brightly coloured neckerchief" , "square" , "Large coloured handkerchief" , "Kind of neckerchief for bad nanna" .)