Skip Nav

Laura Prepon

Laura Prepon plays Karen, Ted's much-hated ex. They first meet in college then later rekindle their romance, much to Lily and Marshall's chagrin.

Image Source: CBS
Read More Laura PreponTVJennifer LopezHow I Met Your MotherBuzz Slideshow
Looking for the perfect gift this holiday season? Order our POPSUGAR Must Have box now >>