Mini in street brought to suit couple (11)
I believe the answer is:
sweethearts
'to suit couple' is the definition.
I can't judge whether this definition defines the answer.
'mini in street brought' is the wordplay.
'mini' becomes 'wee' (I've seen this in another clue).
'in' indicates putting letters inside.
'street' becomes 'st' (abbreviation).
'brought' becomes 'hearts' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'wee' going inside 'st' is 'sweet'.
'sweet'+'hearts'='SWEETHEARTS'
Can you help me to learn more?
(Other definitions for sweethearts that I've seen before include "Loves" , "They love" , "lovers" , "darlings!" .)