Looking slim and stunning, the 26-year-old Cavallari paired Chinese Laundry "Liberta" heels she designed for the brand with a black tulle strapless Paper Crown "Jasper" dress designed by Conrad, 27. (The shoes retail for $149.95 and the dress is currently on sale for $238.70.)
Cavallari, who also has a line of affordable jewelry, recently appeared on Watch What Happens Live on Dec. 3, where she revealed that while MTV's The Hills was "pretty fake," her dislike of Conrad was one of the few elements of the show that was real. When host Andy Cohen asked her if her "distaste" for the fashion designer was scripted, she laughed and shouted, "No!"
This article originally appeared on Usmagazine.com: Kristin Cavallari Wears a Lauren Conrad-Designed Dress!