Just as lovely (4)
I believe the answer is:
fair
I believe this clue is a double definition.
'just' is the first definition.
(just can mean fair in the sense of showing justice)
'lovely' is the second definition.
(thesaurus)
'as' acts as a link.
(Other definitions for fair that I've seen before include "Trade exhibition, (of weather) fine" , "Reasonable - market" , "... enough! - that's reasonable" , "Just right" , "kind of entertainment" .)