Mary Jessica Gibbs. She was 2 1/2 yrs old and had trouble sitting still, so they followed her around with a microphone.
She is doing a sequel to Monsters, Inc. with John and Billy. It will be called "Monsters University" and is coming out in 2012.
I think that this movie will end when Sully and Mike tell Boo the story of how they became friends
The Film does not say the Actual Age.
Nope. I am pretty positive.
Boo is three and a half!!!!!!!!
3
Her name was Boo.
Mary!
Mary Gibbs
There are no "Boo Berries" on Moshi Monsters.
I think Boo is in monsters ink
Boo is three and a half!!!!!!!!
BOO!!!
3
Her name was Boo.
Mary!
Mary Gibbs
Kitty
Baby Boo's propere name is Mary as her name is on the top of a drawing in her room
boo?
No one knows for sure but the monsters call her Boo