St. Vincent and Cara Delevingne Challenge the Paparazzi to an Impromptu Water Fight

Cara Delevingne and St. Vincent pulled a fast one on the paparazzi in London on Friday night. As the two stepped out together for their evening, they greeted the unsuspecting photographers with a full water-gun assault. In the past couple months, we've been seeing more and more of the gorgeous couple, who are celebrating their first holiday season together. Back in October, the two held hands during Paris Fashion Week, and earlier this week, they had a stylish outing in London. Keep reading to see their latest wet adventure.