International team's second to wear unusual silver uniforms (8)

'uniforms' is the definition.
(livery is a kind of uniform)

'international team's second to wear unusual silver' is the wordplay.
'international' becomes 'i' (abbreviation eg in IMF).
'team's second' becomes 'e' (2nd letter of 'team').
'to wear' is an insertion indicator (to wear something is to be covered up by it).
'unusual' indicates anagramming the letters.
'i'+'e'='ie'
'silver' with letters rearranged gives 'livers'.
'ie' inserted inside 'livers' is 'LIVERIES'.