Credit: Twitter

Less than a month after she welcomed son Edward Duke via gestational surrogate, Giuliana Rancic reported for work September 23 to host the E! network's Primetime Emmy Awards Countdown to the Red Carpet special.

Wearing an ivory Rafael Cennamo dress that matched co-hosts Kelly Osbourne (in Marcia Lucia Hohan) and George Kotsiopoulos (in Brooks Brothers), the new mom admitted it was hard getting back into the swing of things. "I've missed you so much," Rancic told her Fashion Police cohorts.

"It's so different not having you there," Osbourne said. "Not that we haven't had amazing guests, but I missed you so much."

During her maternity leave, Rancic tuned into the Joan Rivers-hosted show weekly. "I still acted like [a critic]," Rancic told Osbourne, 27, and Kotsiopoulos, 43. "Sometimes you cut me off and I get very offended!"

Rancic then shared several photos of her son, who was born in Colorado August 29. "I always vowed I would never be one of those moms who brought pictures, but I'm one of those moms!" she laughed. "It's hard to believe he's almost a month old."

Rancic and Ryan Seacrest, 37, will co-host E!'s live red carpet pre-show beginning at 6 p.m. EST.