Three sisters return to their home for the third wedding of their twice-widowed mother. But the mother and daughters are forced to revisit the past and confront the future, with help from a colorful group of unexpected wedding guests.
| Actor | Role |
|---|---|
 Scarlett JohanssonKatherine | Katherine |
 Sienna MillerVictoria | Victoria |
 Emily BeechamGeorgina | Georgina |
 Kristin Scott ThomasDiana | Diana |
 Freida PintoJack | Jack |
 James FleetGeoff | Geoff |
 Mark StanleyCharlie | Charlie |
 Sindhu VeeBelkis | Belkis |
 Joshua McGuireJeremy | Jeremy |
 Samson KayoSteve | Steve |
 Thibault de MontalembertThe Grand Fromage | The Grand Fromage |
 Roger Ashton-GriffithsKen | Ken |
 Fflyn EdwardsMarcus | Marcus |
| ZZiggy GardnerSkylar | Skylar |
| LLydia JonesClara | Clara |
| JJosephine JonesDaisy | Daisy |
| JJaime SchneiderTom | Tom |
 Michael SpicerTed Schenker | Ted Schenker |
 Ian Dunnett JnrFireman | Fireman |
 Jonathan JulesJones | Jones |