Her younger sister, Robyn, attends the immensely prestigious Orange County High School of the Arts in Santa Ana, California.

Born in Germany to American parents, Mindy and Jonathan Mack.

The Mack family moved back to the United States from Germany when she was two years old.

Her father is an opera singer.

Announced her engagement to her longtime boyfriend, Peter (March 2003).

Attended the 2003 San Diego International Comic-Con with co-star Sam Jones III to promote the 3rd season of "Smallville" (2001).

Learned to knit from co-star Annette O'Toole.

Audrey Hepburn is her beauty role model.

Had her hair cut short just before the third season of "Smallville" (2001) went into production. After shooting the season opener, the producers insisted that she wear a hairpiece until her hair grew longer. They felt Allison's haircut did not suit the character of Chloe Sullivan.

An old autographed head shot from when she was a child still lies framed on the wall of a Taco Bell restaurant across the street from Warner Bros. Studios on Olive ave in Burbank, California.

Allison has a German Shepard/Malamute dog named Phantom.

Shares Kristin Kreuk's addiction to Chapters bookstores.

Was listed among the 50 Sexiest Women in the Femme Fatales (January/February 2005) magazine.

She and her co-star Kristin go shopping often.