Kristen Bell and Dax Sheperd can now add mom and dad to their list of roles. The couple has welcomed a daughter, Shepard announced via Twitter on March 28, 2013. "Lincoln Bell Shepard is here," he wrote. "She has mom's beauty and dad's obsession with breasts. Hooray!!!" Baby Lincoln is the first child for Bell, 32, and Sheperd, 38. The couple, engaged since 2009, announced in November that they were expecting.