05/25/2010 05:12 am ET Updated Dec 06, 2017

Emma Thompson's Pig Premiere Date (PHOTO)

Emma Thompson had a fun accessory on the red carpet of the new "Nanny McPhee" movie in London Wednesday night.

Thompson, who wrote and stars in the movie, walked the press line with a pig on a leash. The sequel takes place on a farm and costars Maggie Gyllenhaal as a mom struggling to raise her kids and run that farm while her husband is off at war. McPhee shows up to help.