Bianca Kajlich is an American actress. Kajlich has had starring and supporting roles in television and film; she is perhaps best known for playing Jennifer on the CBS comedy Rules of Engagement. Bianca made her television debut as Roxanne in the 1999 movie Sorority, which led to appearances on the TV series Boston Public, Dawsons's Creek and Rock Me, Baby. She also had roles in the feature films 10 Things I Hate About You, Bring It On, and Halloween:Resurrection. She also stars in the NBC sitcom Undatebale.