Katie Cassidy & Christa B. Allen: InStyle Summer Soiree 2013

Katie Cassidy is stunning at the 2013 InStyle Summer Soiree held at the Mondrian Hotel on Wednesday night (August 14) in West Hollywood, Calif.

The 26-year-old Arrow star was joined at the event by former Revenge co-stars Christa B. Allen and Ashley Madekwe.

PHOTOS: Check out the latest pics of Katie Cassidy

A few days earlier, Katie stepped out for the 2013 Teen Choice Awards held at the Gibson Amphitheatre in Los Angeles.

FYI: Christa is wearing a Robert Rodriguez dress, Christian Dior shoes, and Martin Katz jewelry. Katie wore a Versace long-sleeve dress with studded Christian Louboutin pumps. Ashley wore a bright Diane von Furstenberg jumpsuit, vintage Chanel No. 5 belt, Saint Laurent sandals and Jimmy Choo clutch.

10+ pics inside of Katie Cassidy, Christa B. Allen, and Ashley Madekwe…