Olivia Jane d'Abo (born January 22, 1969) is an English actress, singer-songwriter, and voice artist best known for portraying the rebellious teenage sister Karen Arnold in The Wonder Years and recurring villain Nicole Wallace in Law & Order: Criminal Intent. She voiced Jane Porter in the Disney animated series, The Legend of Tarzan and Tarzan & Jane, Koharu in the English dub version of Studio Ghibli's Pom Poko and Luminara Unduli in the animated series, Star Wars: The Clone Wars. She also played Miss Anna Montgomery in The Big Green.