The Hills alum and her new husband "feel so blessed"

By Jennifer Garcia
Updated May 06, 2015 06:05 PM
Credit: Splash News Online

Holly Montag and husband Richie Wilson welcomed a son, Isaiah Hawk Wilson, on Sunday, May 3, at 9:24 p.m. The baby boy weighed 7 lbs., 5 ounces.

“He is a gift straight from heaven. Richie Wilson and I feel so blessed to be his parents,” Montag tells PEOPLE exclusively. “The whole family is doing well.”

Montag’s pregnancy announcement in January had a little help from little sister Heidi Pratt, who Tweeted a link to a photo of of the happy couple posting in front of a Christmas tree with Holly cradling her belly.

Holly, 31, and Wilson tied the knotin September in Crested Butte, Colorado.

“I married the love of my life,” Montag, 31, told PEOPLE of her new husband.