And as well as seeing his TV show Boardwalk Empire earn Martin Scorsese the award for Best Director for a Drama Series, actor Vincent Piazza had a trophy of his own on his arm, in the form of girlfriend Ashlee Simpson.
The new couple were spotted getting cosy at the HBO Official After-Party, and it is the third night in a week the pair have paraded their new relationship in public.
Just two nights previously, the couple made their first ever official public appearance together when they attended the Boardwalk Empire second season première in New York.
Simpson appeared to be making it loud and clear that they are officially an item, as she affectionately stroked Piazza's face and lovingly cuddled up to her beau for the cameras.
They were joined by Entourage actress Perrey Reeves and True Blood's Alfre Woodard as they worked the red carpet, while Game of Thrones stars in the form of Lena Headey, Michelle Fairley and Mark Addy were out in full force.
Glee star Jane Lynch, who hosted the 63rd Annual Primetime Emmy Awards, lead the way in a shimmering metallic frock.
She was joined by Modern Family actress Julie Bowen and writer Steve Levitan, who showed off their respective trophies after their show scooped five gongs at the ceremony.
Other winners proudly displaying their gongs for the cameras were Melissa McCarthy, who nabbed Best Actress in a Comedy Series for her role in Mike & Molly, and Guy Pearce, who won Best Supporting Actor in a Miniseries or Movie for his role in Mildred Pierce.
They were joined by a host of television vampires including True Blood stars and married couple Anna Paquin and Stephen Moyer, and Vampire Diaries actress Nina Dobrev, who wore a trailing red Donna Karen fishtail gown.
The party was also favoured by So You Think You Can Dance presenter Cat Deeley and Project Runway host Heidi Klum, who each donned princess gowns for the occasion.
Deeley opted for a flowing white number by bridal specialist Monique Lhuillier while Klum showed her support for her TV series in a frilly strapless dress by one of Project Runway's former winners, Christian Siriano.
Other stars who attended the lavish bash included Bones star David Boreanaz and his former Playmate wife turned actress Jaime Bergman, and 500 Days of Summer star Zooey Deschanel, who sported a on-trend colourblock dress.
The guests tucked into food and watched an acrobat perform while dangling from the high ceiling.
Martha Plimpton of The Goonies fame and Golden Girl Betty White also wound down at the glamorous party.