Attraction of Happy Meals without dressing (6)
I believe the answer is:
appeal
'attraction' is the definition.
(thesaurus)
'happy meals without dressing' is the wordplay.
'happy' becomes 'app' (I can't explain this - if you can you should believe this answer much more).
'without dressing' means to look at the middle letters.
The middle letters of 'meals' are 'eal'.
'app'+'eal'='APPEAL'
'of' is the link.
(Other definitions for appeal that I've seen before include "Bring verdict for review by higher court" , "Application for court ruling to be reversed" , "Allure, attraction" , "Petition to a higher court" , "please" .)