Lyndsy Marie Fonseca (born January 7, 1987) is an American actress known for playing Colleen Carlton on the CBS daytime soap opera The Young and The Restless, Dylan Mayfair on the ABC series Desperate Housewives, and Ted Mosby's future daughter on How I Met Your Mother. She also played Katie Deauxma in the 2010 superhero film Kick-Ass. As of 2010, she stars as Alexandra 'Alex' Udinov in The CW's action series Nikita. Fonseca is of half Portuguese descent. Born in Oakland, California, she was raised first in Alameda and then Moraga. She was discovered there by a talent manager and immediately moved to Los Angeles for her first pilot season at age 13 in the middle of the school year.
Contributions by G.-M. Cupertino, All Hallow's Wraith, and CollisionCourse.