Do the twist with ample cups in view, nearly (4)
I believe the answer is:
eddy
'do the twist' is the definition.
'ample cups in view nearly' is the wordplay.
'ample cups' becomes 'dd' (bra size).
'in' means one lot of letters goes inside another.
'view' becomes 'eye' (I've seen this before).
'nearly' means to remove the last letter.
'eye' with its last letter taken off is 'ey'.
'dd' going within 'ey' is 'EDDY'.
'with' is the link.
(Other definitions for eddy that I've seen before include "Twist" , "current revolution" , "movement going round in circles" , "Founder of sect" , "dangerous bit of water" .)