Hillary Wolf as Megan McCallister
Megan McCallister is one of the middle children of the McCallister family. Like their brother, she also tends to give Kevin a hard time. However, she must have a soft spot for him, as she displays a bit more concern and sympathy when they discover Kevin has been left at home.
You can see her concern when she asks her siblings if they are also feeling worried for their little brother. The tone in her voice displays a sensitive spot in her character, as a caring older sister.