Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_40081 ( "Date" text, "Cover model" text, "Centerfold model" text, "Interview subject" text, "Pictorials" text )

### Question ###
Who was the Cover model in the issue in which the Interview subject was Joan Collins?

### Accurate SQL ###

SELECT "Cover model" FROM table_40081 WHERE "Interview subject" = 'joan collins'