Bridget's focus on single life and her career is interrupted when she finds herself pregnant, but with one hitch - she can only be 50 per cent sure of the identity of her baby's father after a pair of one-night stands. Is the dad old flame Mark Darcy or US dating guru Jack Qwant? Comedy sequel, starring Renee Zellweger, Colin Firth, Patrick Dempsey, Emma Thompson and Sally Phillips