25/06/2012 09:15 BST | Updated 25/06/2012 09:27 BST

'Your Sister's Sister': Win A Bobbin Bike To Celebrate Emily Blunt's New Film

Emily Blunt (Salmon Fishing In The Yemen) stars in the charming, heartfelt and hilarious film Your Sister's Sister, in cinemas Friday, 29 June.

Lost in an emotional funk one year after his brother's death, Jack (Mark Duplass, Cyrus) takes his best friend Iris (Emily Blunt) up on her offer for a reflective week of solitude at her family's remote island retreat.

Upon arriving at the house, Jack discovers that Iris' sister Hannah (Rosemarie DeWitt, Mad Men) had the same idea, and the two spend an awkward evening together. Iris shows up the next morning unannounced, setting in motion an emotionally twisted tale of sisters, brothers, and best friends. 

To celebrate the release of Your Sister’s Sister, Bobbin Bikes - http://www.bobbinbicycles.co.uk/ - are offering one lucky lady a vintage-style ladies ‘Bramble’ bike worth £320 (photo below).

To be in with a chance of winning, just watch the trailer below and click here to answer the question to the competition over on our Facebook page.

To find out more about the film visit the Your Sister's Sister Facebook page.

The prize: