updated 12/16/2013 AT 4:00 PM ET
•originally published 12/16/2013 AT 4:15 PM ET
Baby is coming soon!
A small group of guests – including celebrity pals Jennifer Aniston, Amy Adams and Kristen Bell – arrived with gifts wrapped in pink, purple and blue, and the home was decorated with pink and blue balloons.
Blunt and her husband, actor John Krasinski are keeping the sex of their first child a secret, a source tells PEOPLE. The couple plan to spend the holidays in Los Angeles with family and friends as they await the arrival of their baby, expected at the end of January.
“It was a very casual shower,” the source adds. “Emily seems very excited about the baby and looks great. She opened gifts of baby clothes and plush toys in front of her guests as they enjoyed cookies and chocolate. Everyone was oohing and ahhing.”
Aniston, who was gifted a box of sweet treats on her way out, was driven to the shower by her fiancé Justin Theroux, who came inside to briefly say hello to Blunt and then went shopping before returning to pick up the actress.