E! News anchor Giulian Rancic and her husband Bill welcomed a baby boy on Wednesday, Aug. 29.

The couple were "beyond elated" that their son, Duke Rancic, entered the world at 10:12 p.m. Wednesday night in Denver. Duke, a first child for both parents, was carried via gestational carrier. He weighed 7 pounds, 4 ounces and measured 20 inches.

Bill announced his son's birth to fans on Twitter:

"The 'Duke' has landed! Edward Duke Rancic was welcomed into the world last night at 7lbs 4oz. G & I feel blessed beyond words...We did it!" he tweeted. 

"Bill and I are blessed beyond words to welcome Edward into our lives," Giuliana told E! News. "Thank you so much to everyone who supported us along the way. We are so in love with the little guy already!"

Bill and Giuliana were in the delivery room to witness the birth of their son after the anonymous surrogate experienced four hours of labor. Rancic told E! that she and her husband cried when baby Duke made his entry into the world.

The couple revealed that Bill cut their newborn's umbilical cord minutes after his birth and Giuliana was the first to hold him. They also took turns feeding him shortly after.

"He is doing incredibly well," added Giuliana.

The couple first gave a hint to the baby's impending birth when they tweeted, "It's Game Time......" 

The "Fashion Police" co-host and her husband, a businessman and winner of "Celebrity Apprentice" season 1, will take a leave of absence from work for what they call their "babymoon" in Denver.

This week is extra special for the proud parents--Sept. 1 is also the couple's fifth wedding anniversary.

Giuliana recently celebrated her 37th birthday and her contract with E! was extended through 2015. However, things haven't always been so good for the married couple of five years: Giuliana endured several failed IVF attempts, a miscarriage, and was diagnosed with breast cancer last year, after which she underwent a double mastectomy.

The couple told E! News they plan on trying for a second child once Giuliana's clear of the cancer treatments in five years.

"Five years puts me at 42, and a lot of people have kids at 42. So I'm definitely going to try again," she said.