Mad About the Boy," the neurotic, lovelorn heroine hasn't just swapped cigarettes for Nicorette. She's traded the big screen for Peacock, a second-tier streaming service where the franchise's fourth entry will debut on Feb.

Crackling comedy, a sizzling age-gap romance and a new kind of sincerity make Bridget Jones: Mad About the Boy second-best only to the original.

Renée Zellweger and newcomers Leo Woodall and Chiwetel Ejiofor talk age gaps, their favorite moments in the franchise and missing Colin Firth: "It really snuck up on me in a heavy way."