Article continues below advertisementChrissy Teigen and John Legend as Queen Elizabeth II and Prince PhilipSource: @johnlegend/InstagramChrissy Teigen and John Legend opted for matching Halloween costumes.Chrissy Teigen and John Legend went full doppelgänger of Queen Elizabeth II and Prince Philip for Halloween in 2018.The model donned a bright turquoise long coat similar to what the late monarch wore, while the "All of Me" hitmaker looked comfortable in a military uniform.