My wife won't appreciate me suggesting these, as the common theme is obvious
Also, I've failed on the technicality that both were released outside the 80's .. I wanted to add them regardless as they both remind me of the 80's anyway.
Sir Mixalot - Baby got back (1991)
Queen - Fat Bottom Girls (1978, yes.. the year after I was born.. it was that long ago)
(for the record, my wife's rear is perfectly well proportioned, i was implying that she wouldn't approve)