Amongst the glittering crew of horsey guests were Zoe Saldana, Rachel Zoe, Lauren Conrad and Selma Blair. Jaime King hit the ball out of the park in an utterly chic Jason Wu dress with an embellished bodice and full skirt, which she wore with simple swept back hair and Jason Wu heels. The ever-chic Zoe Saldana was pretty as a picture in a sheer Jason Wu black and pink dress, but showed she was a newbie to the horsey scene by wearing towering Brian Attwood stilettos so inappropriate for the treading-in ceremony darling!
Rachel Zoe and Selma Blair brought their latest arm candy their baby boys - along with them and swapped baby notes, whilst social butterfly Camilla Belle showed shes a Polo pro in a fluttery Ralph Lauren dress and wedges.
Guests were kept well fed and watered with the eponymous Champagne, and when onlookers eventually transferred their gazes from the red carpet to the green Polo fields, they were just as entertained. Well, almost...