Photo: Instagram

John Legend's supermodel girlfriend Chrissy Teigen has given him an ultimatum - marry her before the end of the year or she's ''out''.

The 27-year-old model - who has been dating the 'Ordinary People' people singer for seven years and became engaged to him in December 2011 says, “We keep pushing the date.” When quizzed by reporters recently on when they'll actually walk down the aisle, Teigen said, “Definitely this year, but this year just started. If its not this year, I’m out.”