Audi Polo Challenge 2015: See All The Best Looks From The Polo

Polo season kicked off this weekend with the annual Audi Polo Challenge. On Saturday and Sunday a fleet of stars, from Douglas Booth to Samuel L Jackson, flocked to Cowarth Park in Ascot to watch Prince Harry and Prince William play (slash make the most of the free flowing champagne and many, many cucumber sandwiches).

So what does one wear to cheer on Prince Harry? The dress code was 'smart' (and divot-stomping appropriate) which went from Emily Blunt in dusty pink chiffon Jenny Packham to Tom Hardy in a baseball cap + jeans + beard.

If you so happen to be polo-ing this summer, here are the key looks to copy. Gemma Arterton wore a striped skirt with a fluted skirt and gold t-bar sandals. Ophelia Lovibond looked fabulous in a white Self Portrait check sheer dress with a wicker basket-meets-handbag, while Dr Who's Jenna Coleman wore an off-the-shoulder cream dress with buttons down the front.

Speaking of off-the-shouldering, Millie Mackintosh wore a Maje black and white floaty skirt with an off-the-shoulder black top. Laura Jackson also did the monochrome thing in a white shift with black piping, and a Chanel 'Ladies First' clutch bag.

Prince Harry played on both the Saturday and Sunday, celebrating his team's win by dancing (rather enthusiastically) to surprise post-polo performer John Newman. While his brother William made an appearance on the polo field on Sunday.

Before you ask, no Princess Charlotte wasn't seen on the sidelines. But Chris Hemsworth brought the cute factor, by bringing his three-year-old polka-dot-wearing daughter along to meet the princes.

See who wore what at the Audi Polo Challenge in the gallery below...