- "Rosie too!"
- —Rosie's catchphrase
|Age|| Newborn (Big Brother Caillou)|
~1 (some season 1 episodes)
2 (rest of the series)
|Family||Caillou ( older brother), Doris (mother), Boris (father), Gilbert (cat), Rosemary (grandmother), Hadley (grandfather)|
|Born||October 12, 1995|
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 whitish-yellow 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.
- Caillou usually shows love to Rosie (despite some quarrels between the two). In the episodes "Halloween" and "Caillou's a Clown", she was coulrophobic afraid 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). She always says her name, Rosie.
- 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.
- Her first appearance was in "Caillou Makes Cookies" and her last appearance was in "Soccer Trouble".
Almost all of the episodes
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