Bubbles, I Think.

Bubbles from the Powerpuff Girls

http://en.wikipedia.org/wiki/List_of_characters_in_The_Powerpuff_Girls

Bubbles (voiced by Tara Strong in the series and Kath Soucie in the What-a-Cartoon!) is a fictional character in animated television series The Powerpuff Girls. She is portrayed as having short blonde hair in two pigtails, light blue eyes, and dresses in light blue. The ending theme refers to her as "the joy and the laughter", meaning that she acts as the baby of the group (despite being the same age) and is defined by innocence, playfulness and gentle demeanor. She does, however, have a tendency to be naïve, ditzy, submissive and overemotional, leading to her often being regarded, by friends and foes alike, as the group's weak link. However, she can become very independent and aggressive when pushed, and out of all the Powerpuff girls she is the most feared by Mojo Jojo after having single handedly taken him down in a fit of rage in one episode. Her special superpower is that she can speak many languages, including Spanish (speaking) and Japanese (both reading and speaking), and communicate with animals, such as cats, and most notably squirrels (as revealed in the episode "Fuzzy Logic" and again in "Stray Bullet"). She also has the Sonic Scream (although later other girls seem to be able to use a weaker version too).

an interview with bubbles:

http://www.youtube.com/watch?v=7ntnSReyFt8