Bianca Kajlich stars as Leslie Burton in NBC's comedy series "Undateable."

Leslie is Danny's sister and is a recently divorced wine-rep who, now single again for the first time in ten years, is struggling to find her place in the single world. Once introduced to the guys at the bar, she bonds with them immediately as they welcome her into their gang.

Kajlich began her career as a dancer with the Olympic Ballet Theatre in Washington. She spent seven years with the company performing lead roles in productions of "The River," "Swan Lake" and "The Nutcracker."

Kajlich is best known for her regular role on CBS's long-running comedy series "Rules of Engagement." Prior to that, she starred on "Rock Me Baby" and had recurring roles on "Dawson's Creek" and "Boston Public." Kajlich was also seen on "Psych," "Vanished," "In Justice" and "Freaks and Geeks." Her feature film credits include "Bring It On," "Halloween: Resurrection" and "10 Things I Hate About You."

In 2011, Kajlich had a supporting role in Ruben Fleischer's "30 Minutes or Less" and wrapped on "Dark Was the Night" with Lukas Haas and Kevin Durand. The film is currently in post-production.

Kajlich enjoys painting, writing and road trips across the country. Born in Seattle, she currently lives in Los Angeles.