Not safe in a tight skirt (2,4)
I believe the answer is:
at risk
'not safe' is the definition.
'a tight skirt' is the wordplay.
'tight' indicates anagramming the letters (tight can mean drunk).
'skirt' is an anagram of 'trisk'.
'a'+'trisk'='AT RISK'
'in' is the link.
(Other definitions for at risk that I've seen before include "Exposed to danger" , "Endangered" , "Vulnerable" .)