by Elisa Osegueda - Entertainment Tonight

Jeff Lewis is a dad!

The 46-year-old reality star and his partner, Gage Edward, welcomed a baby girl via surrogate on Tuesday.

"At 4:22pm today, I grew up," Lewis shared on Instagram, alongside a pic of him snuggling his new bundle of joy. "Welcome Monroe Christine Lewis."

At 4:22pm today, I grew up. Welcome Monroe Christine Lewis.

A photo posted by Jeff Lewis (@jljefflewis) on

EXCLUSIVE: 'Flipping Out' Star Jeff Lewis Is 'Sure' He'll 'Make a Lot of Mistakes' With New Baby

The Flipping Out star confirmed the gender of the baby back in May with a clever Instagram post.

One’s about to hatch and it’s a girl!

A photo posted by Jeff Lewis (@jljefflewis) on

Last week, Lewis posted a photo of his daughter's ultra-chic nursery, complete with a modern crib, stuffed animals and gold accent pieces.

"All we need now is the baby," he captioned the post with the hashtags "#40weeks #babycountdown #babywatch2016 #hurryupalready."

All we need now is the baby. #40weeks #babycountdown #babywatch2016 #hurryupalready

A photo posted by Jeff Lewis (@jljefflewis) on

And, it looks like he's ready to spoil his little bundle of joy. "I know she's not here yet but…" he captioned a post, alongside a photo of himself with a cute pony.

I know she's not here yet but...

A photo posted by Jeff Lewis (@jljefflewis) on

Season nine of Flipping Out premiered earlier this year and gave fans a glimpse into Lewis' fertility journey and his thoughts on parenthood.

"I mean, I'd like to think I'm gonna be a good parent," he explained on the show, "But I'm sure I'm gonna make a lot of mistakes. We should just have two [kids] in case I f**k up the first one."

WATCH: Kerry Washington Gives Birth to Baby Boy -- Find Out His Name!

Lewis isn't the only celeb with recent happy baby news. Last Tuesday, ET confirmed that Kerry Washington gave birth to her second child with husband Nnamdi Asomugha, a baby boy, on Oct. 5.

ET spoke with the Scandal star last month at the Emmy Awards, when she admitted to having a bit of anxiety about expanding her family of three.

"I'm an only [child] so every time the family grows it uh... it brings up a little bit of anxiety," Washington explained. "But it's fantastic. I'm really happy."

For more on Washington's bundle of joy, watch the video below.