Lavishly decorated (6)
I believe the answer is:
ornate
'lavishly decorated' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ornate that I've seen before include "Highly embellished" , "Richly adorned and elaborate" , "Ostentatious" , "Elaborately decorated, perhaps overdone" , "Over-decorated" .)