An American comedian's impressions of celebrities struggling through a traffic jam has gone viral.
Lauren O'Brien's YouTube video, called My Impressions of Celebrities Stuck in Traffic, has had nearly four million views since being posted online last week.
In the two-minute clip, she dons wigs and mocks celebs like Angelina Jolie, Ellen Degeneres, Katie Holmes and Kim Kardashian as they sit in a traffic jam.
O'Brien told news.com.au her favourite celebrity to impersonate was Modern Family star Sofia Vergara.