Beatrix Potter's "Hill Top" house as portrayed in this movie is actually "Yew Tree Farm" near the town of Coniston (part of the Lake District), which was owned by Potter in the 1930s. You can visit the real Hill Top house which is owned by Britain's National Trust.
Ewan McGregor was Renée Zellweger's first choice to star beside her as Miss Potter's romantic interest, Mr. Norman Warne.
Costume Designer Anthony Powell sought out all original pieces for this movie, and did not have to reproduce any pieces.
Renée Zellweger and Ewan McGregor appeared in Down with Love (2003), in which they also played each other's love interests.
At 21 minutes, when Beatrix is narrating the story of Peter Rabbit, the quote about "Mr. McGregor's garden" is spoken over a shot of Ewan McGregor.