Sam and Chris' little bundle of joy was born on Friday, September 7 at 6:58PM, weighing seven pounds and two ounces, Peoplereported. The baby also measured 18.5 inches.
Sam shared two photos of Isabella's first hours in the hospital with the magazine, revealing, "It's been a long few days, but we are finally home with our sweet girl. She is healthy and very happy! And we are the luckiest to have her as ours."
The 33-year-old consultant got engaged to Chris in January after dating for almost one year. He popped the question while they celebrated his birthday in Atlanta together.
Just two months later, Sam announced the big news in March she was expecting their first child.
She posted a photo on Instagram in which she was cradling her baby bump and captioned the image, "This just in... I ate a watermelon seed and then this happened... lol jk #CantWaitToBeAMom."
"I was very excited to find out I was pregnant. I wasn't sure if it was going to be possible since I was diagnosed with endometriosis when I was younger," Sam previously told People, adding that it took "six pregnancy tests and then two more a few days after" to confirm her "most amazing dream" had "come true."
She gushed at the time, "Just being able to have this experience and create something so amazing with the man I love is all I ever wanted. We are both so overjoyed and cannot wait to see what the future holds."
Sam documented her pregnancy on social media ever since by posting photos of her growing belly.
Sam tied the knot with Neil Bowlus on Married at First Sight in 2015, but they split in June 2016. Their breakup on "Decision Day" was one of the most heart-wrenching scenes the show has ever had.
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Sam spent weeks treating Neil poorly on the show, but once she determined she should give him a chance and really get to know him, she started to fall for him.
Sam eventually realized she wanted to stay married to Neil for the long run, but her husband -- who was repeatedly hurt by his wife -- had already checked out of the marriage.
Sam was devastated by Neil's decision to file for divorce, and she ran out of the room crying and dropped to her knees. However, Sam ultimately understood why Neil felt the way he did, and they managed to become good friends and continue to provide each other with support and encouragement.