First lady Jill Biden practiced a bit of seaside diplomacy Thursday, taking a beach stroll with UK Prime Minister Boris Johnson’s wife and their 1-year-old son. Photos showed Biden, 70, laughing with Carrie Johnson, 33, and little Wilfred near the ocean in Cornwall, where their husbands sat down ahead of the G7 summit. The two women were spotted swapping their heels for flip-flops to frolic on the windy beach at Carbis Bay. At one point, Biden and her British counterpart dipped their toes in the ocean, as Wilfred played on the sand in a diaper. The first lady had on a black-and-white polka dot Brandon Maxwell dress and a black blazer with the word “Love” printed on the back, while Johnson, who married the prime minister last month, wore a long red frock. The excursion took place after the two couples met for the first time earlier on Thursday, on the Bidens’ first full day of their European trip. #JillBiden The New York Post is your source for breaking news, news about New York, sports, business, entertainment, opinion, real estate, culture, fashion, and more. Catch the latest news here: https://nypost.com/ Follow The New York Post on: Twitter - https://twitter.com/nypost Facebook - https://www.facebook.com/NYPost