Lean and lovely
I believe the answer is:
svelte
'lean and lovely' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for svelte that I've seen before include "Slender or sleek" , "Slim or slender in a graceful way" , "Polished" , "Slim and elegant" , "Sylphlike" .)