"After experiencing 21 hours of labor, I give all the mamas out there a Hip Hip Horray!!" she captioned a sweet black and white photo of her and husband, Daniel Bryan, holding their infant daughter, Birdie Joe.
"The world couldn't go round without mom's. Make sure to tell your mom today how much you love her because the moment she had you she gave you her heart," she continued. "So honored I get to celebrate this holiday as a mom, it's been a dream of mine. Love you Birdie!!"
"I still can't stop staring at her. Truly the greatest gift you could ever receive," she wrote. "I thank the Lord so much for this precious little angel. I'm so happy I get to go home now but I couldn't have done it with all the nurses this week. They are true rock stars and they taught me so much. Thank you all."
Bella and Bryan welcomed their precious baby girl last Tuesday, and said in a statement released to ET, "There is no better feeling in the world than meeting your daughter. I can't even express the overwhelming joy and love that Bryan and I are feeling. Now we know what parents mean about the love you feel when you first meet your child."