Notice the attire as you speak to (7)
I believe the answer is:
address
'speak to' is the definition.
(synonyms)
'notice the attire' is the wordplay.
'notice' becomes 'ad' (both can mean an advertisement).
'the attire' becomes 'dress' ('dress' can be a synonym of 'attire').
'ad'+'dress'='ADDRESS'
'as you' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for address that I've seen before include "Sermon - lodging" , "Where one lives" , "details on envelope" , "Attend" , "prepare for post" .)