Running in heels! Victoria Beckham and Stella McCartney ditch the runway for muddy fields at school sports day

Fashion designers joined by David Beckham and daughter Harper for a race in London school

Victoria Beckham and Stella McCartney are prestigious designers in their own right – but they ditched the catwalk for the muddy grass instead.

The New York Fashion Week designers were spotted at a school sports day for Romeo Beckham - with the mum-of-four taking part in the race herself.

Victoria was pictured running the fun run at the sports day in her usual glamorous outfit.

The former Spice Girl donned a stylish black leather aviator jacket, loose white tee and bootleg trousers to run the race.

[Victoria Beckham shares behind-the-scenes snap of her haircare makeover in ACDC t-shirt]

[Victoria Beckham’s style in pictures]

VB styled her look with obligatory sunnies – although it doesn’t look as though she was lucky enough to receive a medal to complete the look.

But it seems as though the designer got a little out of breath in her race as fellow NYFW designer Stella had to give her a helping hand after she finished the race.

The Brit-born designer, who was joined at the sports day by husband Alasdhair Willis, looked suitably stylish in a loose black jumpsuit.

The 41-year-old styled her outfit with two-tone nude pointed pumps and stylish Wayfarer style sunnies.

[Victoria Beckham and David celebrate 14 years of marriage (yes we feel old too) but HE'S the lucky one, not her]

[This season's hottest bikini trends: Five key looks]

The designer pair are set to showcase their SS14 collections at upcoming fashion weeks this year, with VB heading to New York Fashion Week and Stella showing at Paris in September.

Perhaps we'll see a sportswear luxe influence if their sports day experience was anything to go by.

What do you think of Victoria and Stella’s sports day style? Tell us over on Twitter now.