Drunk and lass in casual footwear? (7)
I believe the answer is:
sandals
'casual footwear?' is the definition.
(I've seen this in another clue)
'drunk and lass' is the wordplay.
'drunk' indicates an anagram.
'and'+'lass'='andlass'
'andlass' anagrammed gives 'SANDALS'.
'in' is the link.
(Other definitions for sandals that I've seen before include "Open footwear" , "Soles strapped to the feet" , "Light open shoes" .)