Oliver Cheshire has put a ring on it! The British model knelt down on one knee to girlfriend Pixie Lott over the weekend and was met with an emotional yes. Both Pixie and Oliver took to Instagram soon after to share happy photos in front of an idyllic St. Paul's Cathedral backdrop. Pixie shared a snap of her gorgeous diamond ring with the caption "biggest surprise ever" while Oliver melted our hearts with "What a beautiful day and the most beautiful woman in the world said yes to me on it. Lucky man." Read on to see Pixie's new rock!