This Susie Carmichael vinyl figure is released by Funko in their POP! Animation x Rugrats vinyl figure series.
Funko POP! is a crossover vinyl figure series by Funko and other famous franchises such as Disney, Pixar, DC Comics, Marvel Comics, Simpsons, South Park, Uglydoll, etc. Each POP! figure is about ~3" to ~5" tall and crafted in a Japanese anime/manga super-deformed style (NOTE: due to the unique design of each character, the actual size of the figures may be smaller or bigger than stated).
The POP! Animation x Rugrats series features characters from the animated series that focuses on the day-to-day lives of a group of toddlers, most prominently Tommy, Chuckie, twins Phil and Lil, and Angelica, usually involving common life experiences that become adventures in the babies' imaginations. Adults in the series are almost always unaware of what the children are up to.