Notice international model showing some fat (7)
I believe the answer is:
adipose
'fat' is the definition.
('adipose' can be similar in meaning to 'fat')
'notice international model' is the wordplay.
'notice' becomes 'ad'.
'international' becomes 'i' (abbreviation eg in IMF).
'model' becomes 'pose' ('pose' can be a synonym of 'model').
'ad'+'i'+'pose'='ADIPOSE'
'showing some' is the link.
(Other definitions for adipose that I've seen before include "Obese" , "Of tissue storing fat" , "Of tissue, fatty in substance" , "I soaped up with fatty kind of tissue" , "Like a sort of fat" .)