Huge congratulations are in order for one of our celebrity favorites, America Ferrera and husband, Ryan Piers Williams, as they shared the exciting Instagram announcement that she has given birth to a son. Both Mom and baby are doing well and we're over here obsessing about the new little boy's sweet name and nickname that you're sure to fall in love with, too.

Making the official announcement on May 29th through both her twitter and Instagram accounts, with the sweetest photo of the baby boys foot in her hand, she said, "When 2 become 3...Welcome Sebastian Piers Williams - aka Baz! Mom, Dad, and Baby are happy, healthy and totally in love!" Swoon. Not only is the sweet name, Sebastian, perfection, but the precious little nickname of Baz paired with it makes our hearts go pitter patter.

The Superstore actress announced back on New Year's Eve via none other than Instagram that sheer and her husband were expecting their first child. The super sweet photo features the pair wearing shimmering 2018 glasses and holding a onesie that said Mas Besos and announcing that next year, they will have one more face to kiss. So sweet.

Since this moment, we have all been sitting in anticipation of her newest arrival and following along with her pregnancy journey. Knowing that Ferrera is an avid triathlon runner, she did share that she needed to slow things down a bit during her pregnancy and switch from this more intense workout method to prenatal yoga.

RELATED: America Ferrera Practiced Childbirth At Baby Shower

The 33-year-old actress said to UsWeekly, “I had to slow down a little bit. I have a lot of friends who are pregnant right now, which is really lucky for me because we take really long, slow pregnant lady walks. We’ll just hike a little mountain and we’re done.” Before this, in 2017, she had completed a .93 mile swim, 24.98-mile bike ride and 6.2 mile run in 3:49:48. Wow, just wow.

Always having a wonderful sense of humor, Ferrera joked her way through her baby shower, announcing that baby showers are for practicing and thanking the supportive village of women around her as she transitions into motherhood - all done while the women poke their heads through a makeshift vagina.

We wish the sweet family the best as they navigate new parenthood and embrace all the joys and challenges that this journey brings. And of course, we're in such anticipation waiting to see more pictures of little Sebastian!

NEXT:  America Ferrera's Costar Can Get Her Baby Kicking Like Nobody Else