'Bachelor' Alum Peyton Lambton Gives Birth to Second Child With Husband Chris

Peyton and Chris Lambton

Bachelor Nation just got bigger! Chris and Peyton Lambton welcomed their son, Hayes Jennings, on Sunday, December 16. The newborn joins smitten big sister Lyla, 2. “Lyla James is in love with her baby brother,” the couple tells Us Weekly exclusively. “It’s adorable.”

Peyton, 35, who vied for Andy Baldwin’s heart on season 10 of ABC’s The Bachelor , announced in a July blog post that she and Chris were expanding their family. The pregnancy came as a total surprise to the reality star and the Bachelorette season 6 alum.

“Lyla James was an IVF baby and we went through so much to bring her into this world,” Peyton wrote at the time. “I just assumed that was how we would create all of our babies . . . boy was I wrong.”

In September, the TV personality suspected she was having a son. “I’m not sure if it’s the heat or my hormones, but salads have been my jam lately,” Peyton shared on her website. “I don’t think I ate a single salad when I was pregnant with Lyla James. So maybe this is a boy?!?!”

The couple, who met through Bachelor friends in 2010, tied the knot in May 2012.

With reporting by Jen Peros