The Hills Are Alive … with Babies! See Which Cast Members Are Expanding Their Families

LAUREN CONRAD

She may be juggling plenty of hats — from lifestyle guru to fashion designer — but L.C.'s biggest role yet is being mom to newborn son Liam James! The Hills alum and husband William Tell welcomed their first child on July 5, 2017, they told PEOPLE exclusively.

"We are thrilled to share that we welcomed our son Liam James Tell into our family," the couple shared. "Mom, Dad and baby are doing well. We're already in love!"

WHITNEY PORT

Conrad's former Teen Vogue officemate wasn't far behind: she announced via Instagram in February 2017 that she and husband Tim Rosenman were expecting, writing an accompanying blog post sharing her shock and excitement.

"When two people love each other so much and the love becomes too great to fit inside both people, it spills over into a THIRD person," the post read. "This is how I am going to explain where babies come from to the little baby that is now growing inside my belly because Timmy and I are PREGNANT!" The couple welcomed son Sonny on July 27, 2017.

HEIDI MONTAG & SPENCER PRATT

Branded as the MTV reality show's villains, Montag and Pratt made the decision to trade in their low-key, quiet post-Hills life for diaper duty. A source confirmed to PEOPLE that the stars, who wed in April 2009, were expecting their first child in 2017, and that October, they welcomed son Gunner.

KRISTIN CAVALLARI

From Laguna Beach to The Hills, Cavallari has come a long way since starring as the shows' resident frenemy. The TV personality traded in the on-air drama for motherhood after tying the knot with husband Jay Cutler in 2013, 10 months after the arrival of son Camden. In May 2014, the family grew again when son Jaxon was born, and in November 2015, Cavallari welcomed her third child, a daughter, Saylor James.

AUDRINA PATRIDGE

While loyal The Hills viewers will never forget Patridge and Justin Bobby's whirlwind (and often dramatic) romance, the star has left those days behind her. Instead, Patridge is focusing on being a mom to 2-year-old daughter Kirra Max, whom she shares with estranged husband Corey Bohan.

JASON WAHLER

Wahler married model Ashley Slack on Oct. 12, 2013, at the Calamigos Ranch in Malibu, California — and in August 2017, they welcomed their first child, daughter Delilah Ray, adding to The Hills baby boom.

TALAN TORRIERO

Before The Hills, there was Laguna Beach — which Torriero starred in alongside Lauren Conrad and Kristin Cavallari. Years after the show's final episode aired on MTV, Torriero and his wife, Danielle — who tied the knot in 2014 — announced on Instagram that they were expecting their first child in the fall. The pair welcomed son Bronson Leonardo in October 2017. "I fell in love with Danielle all over again today," Talan captioned photos of the couple with their newborn.

ALEX MURREL JOHNSON

The former Laguna Beach cast member, known as "Alex M." on the hit 2000s reality show, and her husband Kyle Mark Johnson welcomed their first child — son Levi —on July 20, 2016. "Meeting my son for the first time was the most beautiful and unforgettable moment of my life," the new mom told PEOPLE exclusively. "I don't think anyone can prepare you or accurately describe the feeling of becoming a mother."

In March 2018, Murrel Johnson announced she was pregnant with No. 2, and welcomed son Kase that August.