Ted and Rita prepared to get dressed (7)
I believe the answer is:
attired
'dressed' is the definition.
(I know that dressed can be written as attired)
'ted and rita prepared' is the wordplay.
'and' is a charade indicator (letters next to each other).
'prepared' is an anagram indicator.
'ted' put after 'rita' is 'ritated'.
'ritated' is an anagram of 'ATTIRED'.
'to get' acts as a link.
(Other definitions for attired that I've seen before include "Wearing clothes" , "got up" , "Dressed or clothed" , "Turned out" , "surrounded by duds" .)