Charles Leclerc's wife Alexandra appeared to show off a prominent baby bump as they enjoyed a cruise around the Costa Smeralda in Sardinia. The Formula One ace, 28, owns a custom Riva 102’ Corsaro Super superyacht named Sedici which is thought to be worth around £15million. Alexandra, 25, looked incredible in a metallic green bikini, while Charles displayed his buff physique in black and white zig-zag board shorts. The couple, who haven't announced they are expecting their first child together, headed out for a swim before relaxing on board. They had brought their beloved dachshund Leo along for their sun-soaked trip. Leo is a frequent…