Gather this girl's not real cowgirl material? (8)
I believe the answer is:
pleather
'real cowgirl material?' is the definition.
'pleather' can be an answer for 'material?' (type of imitation leather). I'm unsure of the 'real cowgirl' bit.
'gather this girl's' is the wordplay.
'gather' becomes 'pleat' (to gather or fold into pleats).
'this girl' becomes 'her' ('her' refers to a girl or woman).
'pleat'+'her'='PLEATHER'
'not' is the link.
Can you help me to learn more?
(Another definition for pleather that I've seen is " Fabric".)