She's All That: Where Are They Now? (PHOTOS)

Kieran has eked out a respectable career since first appearing in brother Macaulay’s breakout movie Home Alone as Fuller, Kevin McCallister’s younger sibling who is prone to bedwetting. As Simon Boggs, younger brother of Laney, he admires and ultimately befriends Zack, which helps his popularity at school immensely.

After his supporting role in She’s All That, Kieran appeared in big-budget movies like Music of the Heart and The Cider House Rules before starring in indie films such as The Dangerous Lives of Altar Boys and Igby Goes Down. He’s also performed in theater productions of This Is Our Youth (at the Garrick Theatre in London’s West End in 2003, and later at the Sydney Opera House in March 2012), After Ashley (for which he won an Obie Award in 2005), and SubUrbia. Kieran’s most recent film credits include Scott Pilgrim vs. the World and Margaret, which starred his She’s All That co-star Anna Paquin.