The Bachelor couple Arie Luyendyk Jr. and Lauren Burnham have welcomed their baby girl into the world and finally revealed their little one's name!

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After giving his followers play-by-play updates on Lauren entering the hospital and going into labor on Tuesday, Arie confirmed Wednesday on Instagram his daughter arrived.

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"We have a BEAUTIFUL baby girl 6 lbs, 13 Oz. 20cm Long," Arie, 37, revealed in his Instagram Stories.

"Mommy and baby are doing great, we are so incredibly happy... I'm so proud of Lauren. You are incredible and you did so good."

Although Arie declined to immediately announce his daughter's unique name, he and Lauren both took to Instagram Thursday morning to share the news.

"Alessi Ren Luyendyk. Born May 29, 2019 @ 2:09PM... She is sweet, calm and @ariejr and I could not be more in love with her," Lauren, 27, captioned a sweet image of the baby crying in the hospital with her little white hat on.

And Arie also posted a photo of his daughter, writing, "This was first time she laid eyes on me and I'm forever changed.️ Alessi Ren Luyendyk."

Arie and Lauren began documenting their time in the hospital on Tuesday evening.

Lauren first showed the couple walking into the hospital and wrote in her Instagram Stories, "Alright you guys... I think this may be it!"

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Lauren posted an image of Arie carrying all of her overnight and baby bags to their room.

"IT'S HAPPENING!" Arie gushed on Instagram alongside a photo of the couple in which Lauren was wearing a hospital gown at 39 weeks pregnant and he was cradling her belly.
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Later that night, Arie revealed Lauren had gone into labor, her contractions were every two minutes, and she was "doing great."

Early Wednesday morning, Arie shared that his wife had received an epidural.

"A little update... It's 5AM and [Lauren] just received an epidural," Arie wrote in his Instagram Stories. "She is doing great and everything is going smoothly! We are going to catch a little sleep and hopefully we will meet our baby soon!"

In between all of the big moments, Lauren and Arie also had some fun in the hospital. For example, Lauren playfully pushed Arie around in a wheelchair before a nurse caught them and laughed it off.

Lauren apparently didn't welcome her baby via C-section after all, as the baby had been breeched for nearly two months prior to her going into labor.

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Arie met Lauren on The Bachelor's 22nd season but chose Becca Kufrin and proposed marriage to her instead during the Final Rose Ceremony. (Lauren finished as the runner-up).

Weeks later, Arie decided to dump Becca because he claimed he was still in love with Lauren, and so he begged Lauren for a second chance.

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After Lauren decided to take Arie back, the real estate agent and pro racing driver proposed marriage on The Bachelor: After the Final Rose in March 2018.

The couple then moved into their first home together in Phoenix, AZ, in April of that year.

The pair announced they were expecting their first child together in November 2018 and revealed two months later they had a baby girl on the way.

Arie and Lauren got married at Haiku Mill in Maui, Hawaii in January 2019 and later enjoyed a babymoon in Bermuda. Arie was also by Lauren's side when she celebrated her baby shower in April.

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