| Owen Wilson | Gil | |
| Kurt Fuller | John | |
| Michael Sheen | Paul | |
| Carla Bruni | Museum Guide | |
| Thierry Hancisse | 1920's Partygoer | |
| Audrey Fleurot | 1920's Partygoer |
| Rachel McAdams | Inez | |
| Mimi Kennedy | Helen | |
| Nina Arianda | Carol | |
| Maurice Sonnenberg | Man at Wine Tasting | |
| Guillaume Gouix | 1920's Partygoer | |
| Marie-Sohna Conde | 1920's Partygoer |

