We've noticed these two BFFs making the scene at a number of high-style parties recently and at each event they have stood out for their fashion forward sensibilities. 

On this cocktail party evening at Neiman Marcus, Duyen wore an NM cashmere turtleneck sweater from Neiman Marcus, topped by a raccoon fur vest by Haute Hippie from Bergdorf Goodman. She picked up the black leather leggings by Balenciaga at Barneys in New York and her Alaia shoes are from Bergdorf's. Finishing off the outfit — an Hermès Kelly bag.

A jewelry designer, Katherine stepped out in a pony hair blazer by Carolina Herrera, a find at the CH Boutique in the Galleria. The cassin mink neck piece is from Saks Fifth Avenue, her  Balenciaga leggings from Barneys and Ralph Lauren booties from the Ralph Lauren boutique. She carried an Hermès clutch. Her most important accessories —  jewelry of her on design, Ava-le.

—SHELBY HODGE