The Serpentine summer party is always a key night on the London social calendar. It's the event where Princess Diana wore her iconic black off-the-shoulder "revenge" dress. Last night, the likes of Alexa Chung, Suki Waterhouse and Adwoa Aboah put on their finest dresses for the occasion, with over half the guest wearing beautiful, heavily embellished creations by Chanel. Chung wore a strapless black dress with an elegant black scarf worn as a shawl over her neck while Bianca Jagger was one of the stars of the night for us in a colourful floral midi dress with gold sandals and white tights. Keep scrolling to see what the entire fashion crowd wore to last night's Serpentine gallery party.