Tiny blonde novel writer (4,6)
I believe the answer is:
enid blyton
'writer' is the definition.
(I've seen this before)
'tiny blonde novel' is the wordplay.
'novel' indicates an anagram (letters in a new or novel order).
'tiny'+'blonde'='tinyblonde'
'tinyblonde' with letters rearranged gives 'ENID BLYTON'.
(Other definitions for enid blyton that I've seen before include "Writer of children's books, d. 1968" , "Children's author" , "Famous Five author" , "Noddy's creator" .)