Designed by Max Fleischer for Paramount Studio's Talkartoons, Betty Boop began as a dog (a dog?) By 1930 she had evolved into a coy flapper whose innocent skirt-lifting and trademark line "boop-boop-a-doop" were sweetly suggestive of more than just singing and dancing. She starred in over 100 cartoons from 1931 to 1939, getting increasingly less saucy (and less popular). She continues to have strong merchandising power.
Mae Questal, the voice of Olive Oyl, also did Betty's. (I did not know that)
Biography from Who2.com
Now she is une femme de un'e certaine age!