Our Olympic heroes will be headed off to London this month — looking as if they’re decked out for a Hamptons lawn party.

Ralph Lauren yesterday unveiled the preppy parade uniforms that Team USA members will wear at the July 27 opening ceremony, stirring an uproar over pricey duds fit for a regatta.

The outfits include blue blazers, cream-colored trousers, white skirts — and berets.

“2012 US Olympic team is wearing berets. Really? America?” tweeted John Lee Rudnicki, a Los Angeles entertainment lawyer. “How many people in the US have you ever seen wear a beret? Five?”