Lauren Conrad welcomed 2017 with a bang!

The Hills star revealed on Instagram that she’s expecting baby No. 1 with husband William Tell. “Happy New Year! I have a feeling 2017 is going to be the best year yet…” the 30-year-old captioned a sonogram photo.

The parents-to-be first began dating in 2012, and William proposed with a round-cut diamond ring in October 2013. They were married in September 2014 on the California coast, but initially crossed paths when Lauren was just a teenager.

“I met my husband when I was 16 and sitting on stage at one of his concerts,” the blonde beauty shared of the 36-year-old, who was in the band Something Corporate from 2001 to 2004.

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The clothing designer previously gushed about marriage, writing on her blog, “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. Dreaming of things we will do 20 years from now is so fun.”

Lauren follows in the footsteps of her Hills costars Kristin Cavallari and Audrina Patridge, who each have children of their own.

Kristin welcomed her third child, daughter Saylor James, on Nov. 23, 2015. She is also mom to sons Camden, 4, and Jaxon, 2. Audrina gave birth to daughter Kirra Max on June 24, 2016, writing at the time, “I am in heaven on Earth. She weighed a perfect 8 pounds 4 ounces, and we couldn’t be happier to finally hold her in our arms."

She added, "To tell you the truth, I haven’t stopped staring at her since she arrived. There are no words to describe the amount of love I have for her…I never thought I could feel so many feelings for someone so small.”

Congrats to the happy couple! We can't wait to meet their bundle of joy!