Bill Rancic and Giuliana Rancic

Giuliana and Bill Rancic welcomed their son via gestational surrogate Wednesday night in Denver.

Bill announced the birth on Twitter. "The 'Duke' has landed! Edward Duke Ranic was welcomed into the world last night at 7lbs 4oz. G & I feel blessed beyond words... We did it!"

The new mom added to E! News: "Thank you so much to everyone who supported us along the way. We are so in love with the little guy already!"

Giuliana Rancic signs three-year deal with E!

According to E!, Bill and Giuliana were in the delivery room for the entire birth, which lasted just over four hours and was free of any complications. The happy dad cut the umbilical cord a few minutes after birth and Giuliana was the first to hold the newborn.

It's been a long road leading up to baby Edward. The couple have struggled with infertility, and Giuliana suffered both a miscarriage and breast cancer.

The Style Network, which airs the couple's reality show Giuliana & Bill, shared their congratulations. "On behalf of everyone at Style, we are overjoyed by the arrival of Edward Duke Rancic. What a wonderful early anniversary present for such a deserving couple. We are so happy that Giuliana and Bill's fairytale story is finally complete, and we look forward to seeing what adventures their future will bring."