Jessica Simpson wore a tight green dress to shop at the children's store Bel Bambini on Friday. It was the start of a fun weekend for Jessica, who celebrated her father Joe's birthday Saturday. She sent him a sweet tweet on the big day, writing, "Happy Bday papa Joe Simpson! I love you! I'm so proud to be your daughter! Your compassion, strength, and determination inspire me everyday!" Jessica also had time to catch up on one of her favorite shows, The Vampire Diaries. She's watched every episode of the show, and joked, "ok, so maybe it isn't a minor obsession." Jessica and her fiancé Eric Johnson are hanging out near home and finalizing their preparations for the arrival of their first child, who's due to arrive this Spring.