A warm, light-hearted comedy based on the book of the same name, this follows five couples facing parenthood for the first time.
The characters are a familiar collection of common stereotypes, or an exaggerated version of them, but there are some genuine laughs to be had at the usual suspects - hormones, flatulence and weakened pelvic floor muscles.
The couples are pulled together by at times tenuous links, some are family members and others pass briefly by each other.
But, as we've seen with Valentine's Day and New Year's Eve the ensemble cast format is very forgiving of individual storylines, and allows What to Expect When You're Expecting to appear to have an idea that's bigger than the individual parts really deliver.
There's the baby-obsessed couple who've been trying to get pregnant for two years (Elizabeth Banks and Ben Falcone); the ex-racing car driver and his trophy wife who can conceive twins on demand (Dennis Quaid, Brooklyn Decker); and the charming couple who turn to adoption (Jennifer Lopez, Rodrigo Santoro).
