| First Sibling | Second Sibling | % Correct |
|---|---|---|
| Jake Gyllenhaal | Maggie Gyllenhaal | 78%
|
| Jessica Simpson | Ashlee Simpson | 67%
|
| Dennis Quaid | Randy Quaid | 64%
|
| Lynn Redgrave | Vanessa Redgrave | 63%
|
| Charlie Sheen | Emilio Estevez | 57%
|
| Shirley MacLaine | Warren Beatty | 45%
|
| Ralph Fiennes | Joseph Fiennes | 35%
|
| Olympia Dukakis | Michael Dukakis | 33%
|
| Dick Van Dyke | Jerry Van Dyke | 29%
|
| Loretta Lynn | Crystal Gayle | 18%
|
| Liza Minelli | Lorna Luft | 18%
|
| Phylicia Rashad | Debbie Allen | 17%
|
| Ron Howard | Clint Howard | 16%
|
| Olivia DeHavilland | Joan Fontaine | 14%
|
| James Arness | Peter Graves | 12%
|
| Veronica Cartwright | Angela Cartwright | 10%
|
| King Edward VI | Queen Elizabeth I | 10%
|
| "Super" Dave Osborne | Albert Brooks | 2%
|