Rosie holding a teacup in her hand
|Age|| Newborn (Big Brother Caillou)|
~1 (some season 1 episodes)
2 (rest of the series)
|Birthday||October 12, 1998|
|Family||Caillou (Older Brother), Doris (mother), Boris father, Gilbert|
|Born||October 12, 1998|
- Rosie has short orange hair (which was at her shortest in Big Brother Caillou, but as she grew older, her hair grew a little fuller) and she wore yellow, long-sleeved, zipfront footie pajamas (with a red Zipper) as a newborn. In various episodes in season 1 (and a flashback in New member of the family), Rosie wore a yellow Long-sleeved, white collared, pajama shirt with a zipper accompanied by yellow pajama pants and pair of red baby booties. However, in most episodes, Rosie wears a blue long-sleeved calf-length dress with a light blue collar and a white sash, red ankle-length socks, blue Mary Jane shoes, diapers in the first two seasons, then frilly blue training panties from season 3 onward (she's now in potty training).
- Rosie tends to cry over almost anything (usually resulting in her needing to be comforted by either parent), yet she can giggle at anything she sees as funny (both normal behaviors for kids her age).
- Calliou usually shows love to Rosie (despite some quarrels between the two). In the episodes "Halloween" and "Caillou's a Clown", she was scared of clowns, but he was able to convince her to not be afraid of them.
- She can't talk as well Caillou can (usually just short sentences (some even being one word or a sound effect) plus speaking in the third person most of the time).
- It is shown in "Olive Muddle" that Rosie likes olives.
- Rosie's favourite song is "Ring Around the Rosie."
- Rosie does not like beans, as shown in the episode "Caillou becomes a waiter".
- She's developed a lot in the later seasons. In "Caillou Helps Out" Rosie starts teething, and in "Am I Big Yet?" She goes through a growth spout.
- Caillou Makes Cookies (debut)
- Big Brother Caillou
- Caillou goes to the zoo
- Caillou Joins the Circus
- Caillou's Teddy Shirt
- Rosie Bothers Caillou
- Caillous a clown
- Caillou's birthday
- Special surprise cake
- Caillou in the bathtub
- Caillou and gilbert
- Raking leaves
- Caillou goes to a theme park
- Olive Muddle
- Caillou's summer goodnight
- Caillou's special friend