At least one major part of Lauren Conrad’s book is longer unwritten; The Hills and Laguna Beach alumna has just become a mother!

Lauren and her husband, William Tell, welcomed a son named Liam James Tell on Wednesday, July 5, a source confirmed moments ago.

As you can see above, the lifestyle maven announced this incredible milestone in vintage Lauren Conrad fashion on Instagram.

“He’s here! We’re so excited to welcome Liam James Tell into the world!” she wrote as a caption to a sweet cross stitch of the family.

Conrad, 31, revealed on New Year’s Day that she and Tell, 37, were starting their family after just over two years of marriage.

She celebrated a baby shower on May 20, where she showed off her baby bump in a striped dress and celebrated with friends poolside.

“So lucky to have these wonderful ladies in my life!” LC, who looked predictably gorgeous, captioned an Instagram photo of the event.

“They spoiled me with a beautiful shower today.”

Tell, who was in the band Something Corporate from 2001-04 before getting a business degree, first met Conrad when she was just 16.

They went on a blind date 10 years later.

Soon enough, the head over heels in love duo were dating exclusively, then getting engaged, then getting married in September 2014.

“What a perfect way to start our lives together; surrounded by the people we love most,” the smitten couple said on their wedding day.

Lauren announced her pregnancy in similar fashion to her son’s birth, sharing a sonogram on the first day of this calendar year.

“Happy New Year! I have a feeling 2017 is going to be the best year yet…” Conrad wrote as a caption to that special image.

In a 2015 blog post, she responded in a Q&A about how many kids she wants to have with her husband. “Maybe two,” she wrote.

“That way we aren’t outnumbered.”

Time will tell if that changes, but we’re fairly certain in saying she, William and Liam will be one incredibly happy family for now.

“My favorite thing about being married is knowing that I have a partner in life that I get to do so many wonderful things with,” Lauren said.

“Dreaming of the things we will do 20 years from now is so fun. William hates it when I say this, but he really is a very nice guy.”

“When you meet a nice guy who also keeps your interest, that is the dream. If you’re going to settle down, it should be with someone you can’t stop thinking about.

Congratulations to the new parents!

The Hollywood Gossip