SNL star Kate McKinnon tricks public into thinking she's Reese Witherspoon in Big Little Lies-themed Billy on the Street

The hilarious video shows her duping people into thinking she's the Oscar-winning Walk the Line actor

Kate McKinnon tricked several New Yorkers into thinking she was Reese Witherspoon in a hilarious brand new episode of Billy on the Street.

Alongside host Billy Eichner, the Saturday Night Live star approached members of the public with the former introducing her as the Big Little Lies actor.

Practically every person they spoke to seemed to think it was the Legally Blonde star, with just two people correcting Eichner.

At one stage, McKinnon is presented with a man who it soon emerges met Witherspoon at an event hosted by the daughter of filmmaker Nancy Meyers, whose husband directed her in Home Again.

"We were at Nancy Meyers' daughter's film. We had a long conversation. I'm Sheila's husband," the man says, failing to realise it's not Witherspoon at all.

"I remember you!" McKinnon exclaims, embracing him. He goes onto invite her for dinner "the next time she's in town".

You can watch the full segment below.

Big Little Lies returns for a second season on 10 June. Witherspoon is back alongside Nicole Kidman, Laura Dern, Shailene Woodley and new cast member Meryl Streep. You can watch the intense trailer here.