Bubbly does it, and port (6)
I believe the answer is:
odessa
'port' is the definition.
(I've seen this before)
'bubbly does it' is the wordplay.
'bubbly' is an anagram indicator (I've seen this in other clues).
'it' becomes 'sa' (old-fashioned abbreviation for sex appeal).
'does' with letters rearranged gives 'odes'.
'odes'+'sa'='ODESSA'
'and' acts as a link.
(Other definitions for odessa that I've seen before include "Black Sea location" , "Battleship Potemkin mutiny port" , "Ukrainian location" , "Do seas come into Ukrainian city?" , "Port city on the Black Sea" .)