Jade revealed the name of her baby girl on Sunday night by sharing an adorable photo of her on Instagram.
"It's official! Say hello to Emerson Avery Tolbert! 'Emmy' for short," Jade, 30, captioned the image.
"Born just a little early at exactly 36 weeks, she arrived weighing 6lbs 8oz and measuring 20 [inches] long! She is such an angel and we can't get enough of her!"
The photo features Avery wrapped in a white blanket with flowers and animals on it. She's wearing a white floral headband and lying on a pink and white personalized blanket with her name "Emerson" repeated throughout. Emerson is also lying between fake twig and floral branches.
One day prior, Jade shared a self-described "vulnerable" photo of herself breastfeeding the baby, writing, "Nothing has ever felt more right and more natural than taking care of my little girl... It feels like she's always been here somehow, like she has always been a part of me... I now get the privilege of understanding a mother's endless love."
"We did it! Our little sweetheart is here! She arrived on her own terms, quickly and 4 weeks early, but she is perfect in every way, healthy and doing well," Jade wrote the following day on Instagram.
"Precious little girl, there are no words to describe the feeling of holding you in our arms for this first time and looking into your beautiful eyes. We love you so much. #bestdayever #ilovemyfamily."
Tanner, 30, also shared a sweet picture of his little bundle of joy late last week in which he was kissing her.
"For all the things my hands have held -- the best by far is you," Tanner captioned the photo.
The new parents announced Jade's pregnancy in early March and revealed in May a baby girl was on the way.
After getting engaged on Mexico on Bachelor in Paradise, Jade and Tanner tied the knot in January 2016 for a televised special on ABC. The couple was later shown hashing out their issues when they appeared on Marriage Boot Camp: Reality Stars late last year.
Jade initially competed for Chris Soules' heart on The Bachelor's nineteenth season, while Tanner first appeared on Kaitlyn Bristowe's edition of The Bachelorette.