Rue Andrew's silly bloomers? (9)
I believe the answer is:
underwear
'bloomers?' is the definition.
(I've seen this before)
'rue andrew's silly' is the wordplay.
'silly' is an anagram indicator.
'rue'+'andrew'='rueandrew'
'rueandrew' anagrammed gives 'UNDERWEAR'.
(Other definitions for underwear that I've seen before include "slips, perhaps" , "Possibly slips" , "Combinations, say" , "Vest, pants etc" , "Clothing nearest the skin" .)