Nick Lachey and Vanessa Minnillo showed some skin yesterday while on a bike ride in Maui. Vanessa Minnillo was in a bikini for the spin around the island while Nick went shirtless to work on his tan. The couple are in Hawaii enjoying an early Winter vacation to celebrate their birthdays on Wednesday. Nick and Vanessa were both born on Nov. 9, and he turned 38 while she rang in 31. Nick got lots of well wishes from fans on Twitter and wrote in response, "Thanks everyone for the birthday wishes today! Vanessa and I are feeling the love from you all. Here's to a great day!" Vanessa, meanwhile, wrote, "Now the Birthday Vaca begins!" They have lots to be thankful for in 2011, especially since the newlyweds tied the knot at Richard Branson's Necker Island on July 15.