Anna Faris and Rose Byrne have joined the cast of romantic comedy 'I Give It A Year'.

The 'What's Your Number?' actress and the 'Bridesmaids' star will star opposite Rafe Spall and Simon Baker in the picture, written and directed by 'Bruno' and 'Borat' screenwriter Dan Mazer.

The movie tells the tale of a couple - Rose and Rafe - who are trying to make it through the first year of marriage, Variety reports.

Anna will next be seen opposite Sacha Baron Cohen in 'The Dictator' - a comedy about a fictional Middle Eastern leader, General Alladeen - and is also thought to be reviving the character of Cindy Campbell in the fifth film in the 'Scary Movie' franchise.

Rose was most recently seen as Moira McTaggart in 'X-Men: First Class', and has starred as Ellen Parsons in TV series 'Damages'.

Her next project is 'The Place Beyond the Pines' - about a motorcycle stunt rider - opposite Ryan Gosling, Bradley Cooper and Eva Mendes, which will be released later this year.