Pregnant Jessica Simpson and Eric Johnson took a romantic walk on the beach in Hawaii today. The couple's been spending time with family in the islands for the holidays, and Jessica shared a sweet message from their getaway with fans on Twitter. She posted a picture of daughter Maxwell next to the writing "Big Sis" to announce her second pregnancy. Jessica also confirmed the news in her latest commercial for Weight Watchers, saying that losing over 50 pounds with the program was "great timing because I'm having another baby." The news puts her back on the list with the other celebrities who were pregnant in 2012, including Claire Danes, who gave birth to son Cyrus earlier this month. Jessica won't be continuing on with Weight Watchers while she's pregnant, though, as her weight and well-being will be monitored by an obstetrician instead.