Capture Lauren's heart in Parisian square (7)
I believe the answer is:
seizure
'capture' is the definition.
(I know that capture can be written as seizure)
'lauren's heart in parisian square' is the wordplay.
'heart' says to take the centre.
'in' indicates putting letters inside.
'parisian square' becomes 'seize' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The middle of 'lauren' is 'ur'.
'ur' placed within 'seize' is 'SEIZURE'.
Can you help me to learn more?
(Other definitions for seizure that I've seen before include "Attack - capture" , "Sudden attack of illness" , "Apprehension" , "Taking possession by legal process" , "convulsion?" .)