<P> Olivia Jane d'Abo ( / ˈdɑːboʊ / ; born 22 January 1969 ) is an English - American actress , singer and songwriter . She is known for her role as Karen Arnold , Kevin Arnold 's rebellious teenage hippie sister on The Wonder Years ( 1988 -- 93 ) , and recurring villain Nicole Wallace in Law & Order : Criminal Intent . </P>
<P> Olivia Jane d'Abo ( / ˈdɑːboʊ / ; born 22 January 1969 ) is an English - American actress , singer and songwriter . She is known for her role as Karen Arnold , Kevin Arnold 's rebellious teenage hippie sister on The Wonder Years ( 1988 -- 93 ) , and recurring villain Nicole Wallace in Law & Order : Criminal Intent . </P>
who played nicole in law and order criminal intent
who played nicole in law and order criminal intent
Olivia Jane d'Abo
Olivia Jane d'Abo