Appear smaller but without any breaks reportedly (8)
I believe the answer is:
seamless
'without any breaks reportedly' is the definition.
I can't tell whether this defines the answer.
'appear smaller' is the wordplay.
'appear' becomes 'seam' (I can't justify this - if you can you should believe this answer much more).
'smaller' becomes 'less' (less great in size).
'seam'+'less'='SEAMLESS'
'but' acts as a link.
Can you help me to learn more?
(Other definitions for seamless that I've seen before include "Without apparent joins" , "Showing no joins" , "Unbroken" , "Without obvious joins" , "Showing no join" .)