Alec and Hilaria Baldwin have welcomed their seventh child, Ilaria Catalina Irena, Hilaria Baldwin announced Saturday. “Both she and I are happy and healthy,” the author wrote on Instagram with a video montage from the hospital, including photos of her children with their new sister and a baby footprint on Alec’s arm. “Her Baldwinito siblings are spending the day bonding and welcoming her into our home. Much love to you all. We are so happy to celebrate this wonderful news with you.” Ilaria joins siblings Maria, 18 months; Eduardo, 23 months; Romeo, 4; Leonardo, 5; Rafael, 7; and Carmen, 8. Al…