Jessica Simpson and husband Eric Johnson welcome daughter Birdie MaeJessica Simpson and husband Eric Johnson announced on social media Wednesday that the fashion designer has given birth to their new daughter Birdie Mae. The baby, weighing 10 pounds 13 ounces, is the couple's third child together. Johnson and Simpson are also parents to 6-year-old daughter Maxwell and 5-year-old son Ace. Simpson previously revealed they were expecting again in an Instagram post in September.Jessica Simpson opened up this week about being a mother to three children ages 7 and under.\u201cThree kids is no joke,\u201d she told People. \u201cIt is definitely constant, and the biggest challenge for me is trying to be present when I am pulled in so many directions.\u201dJESSICA SIMPSON EXERCISES IN \u2018RUBBER CORSET\u2019 NEARLY 2 MONTHS AFTER GIVING BIRTH: 'THE JOY OF POSTPARTUM'Simpson added: \u201cThey are all in such different phases now.\u201dSimpson and her husband, former NFL player Eric Johnson, 39, share three children together: daughter Maxwell, 7;\u00a0son Ace, 6;\u00a0and their newest addition, 3-month-old Birdie Mae, who the couple welcomed in May.As for her youngest, Simpson said the baby girl is \u201cso precious\u201d \u2014 especially when she shows off her dimples.\u201cBirdie is so precious. She is a little smiley angel these days. It is the best thing in the world to see and feel her smile. It fills the room,\u201d she told the magazine.JESSICA SIMPSON SWOONS OVER 'HOT DAD' ERIC JOHNSON HOLDING NEWBORN DAUGHTER BIRDIE MAEThough taking care of three children can be hectic \u2014 \u201cthere is a lot of dividing and conquering going on right now at our house,\u201d Simpson said \u2014 the \u201cIrresistible\u201d singer ensures she and Johnson have time to \u201cconnect.\u201d\u201cWe typically download a movie and order dinner or do something super low-key to just connect. Eric is the greatest motivator and connecting with him on morning walks is the most grounding part of my day,\u201d she added.