Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Cover model | Centerfold model | Interview subject | Pictorials |
| --- | --- | --- | --- | --- |
| 1-84 | no model pictured | Penny Baker | Dan Rather | Mariel Hemingway in Star 80 |
| 2-84 | Kimberly McArthur | Justine Greiner | Paul Simon | Carol Wayne |
| 3-84 | Susie Scott Krabacher | Dona Speir | Moses Malone | Big & Beautiful, Bridgette Monet |
| 4-84 | Kathy Shower | Lesa Ann Pedriana | Joan Collins | Sydney Krueger |
| 5-84 | Rita Jenrette , Phillip Anderson | Patty Duffek | Calvin Klein | Rita Jenrette, Vicki LaMotta , Ola Ray |
| 6-84 | Barbara Edwards | Tricia Lange | Jesse Jackson | Barbara Edwards - PMOY |
| 7-84 | Bo Derek | Liz Stewart | Walid Jumblat | Bo Derek |
| 8-84 | Terry Moore | Suzi Schott | Bobby Knight | Terry Moore |
| 9-84 | Kimberly Evenson | Kimberly Evenson | Shirley MacLaine | Girls of the Big Ten , Anne Carlisle |
| 10-84 | Lesa Pedriana | Debi Johnson | David Letterman | Babes of Broadway , Sonia Braga |
| 11-84 | Christie Brinkley | Roberta Vasquez | José Napoleón Duarte | Christie Brinkley |
| 12-84 | Suzanne Somers | Karen Velez | Paul and Linda McCartney | Suzanne Somers |
Question:
Who was the Cover model in the issue in which the Interview subject was Joan Collins?
Answer:
Kathy Shower