Prepping for her gig to host the 25th Screen Actors Guild Awards, Megan Mullally was forced to shop for her red-carpet look online.

“The major designers are not interested in sending me any dresses,” the 60-year-old star – who eventually landed on an Alexander McQueen gown –  told Access Hollywood on her way into the Shrine Auditorium in Los Angeles on Sunday.

“I said, ‘I am literally hosting. There is a 100 per cent chance that I will be on camera.’ But people were like, ‘No, no thanks.”

Hosts Alec Baldwin and Megan Mullally in fine form at the SAG Awards’ podium. Photo: Getty

Inside the theatre, the Will & Grace star made another jab at ageism in Hollywood addressing Emma Stone, who made a rare appearance with boyfriend Dave McCary.

“To SAG nominee, the beautiful Emma Stone, who just turned 30,” Mullally said to the surprised Maniac nominee. “Our condolences. You had a great run.”

She then focused her snark on the “groundbreaking” roles for women this year.

Glenn Close played a wife, so that’s new. Melissa McCarthy portrayed a woman who repeatedly apologises and asks our forgiveness … Emily Blunt played a nanny, and played a mom that wasn’t allowed to speak.”

The Twitter-verse had plenty to say about Blunt’s pink Michael Kors gown with folded frills.

“Emily Blunt’s labia dress is EVERYTHING!” posted one user. “She low key looks like a baby blossoming out of a woman’s lady bits,” observed another.

Emily Blunt and ‘that’ dress. Photo: Getty

Viewers got a closer look when she took the stage to accept her best supporting actress award for A Quiet Place.

“The entire experience of doing this with you has completely pierced my heart directly,” she told her teary husband John Krasinski.

Mahershala Ali scored the best supporting actor win for Green Book.

Amazon Prime comedy series The Marvelous Mrs. Maisel took out all three comedy categories (best ensemble, best actress for Rachel Brosnahan, and best actor for Tony Shalhoub) the first time since 30 Rock swept the pool with Tina Fey and Alec Baldwin in 2008.

For the second year in a row, This is Us won for best drama ensemble with Killing Eve’s Sandra Oh and Ozark’s Jason Bateman also getting the nod. “This is reassuring,” Bateman noted dryly.

Oscar race is wide open

With the five film awards going to different movies, the Oscars race appears to be an open field this year.

A Star is Born, which came into the ceremony with the most nominations, failed to score a win on the night.

Golden Globe winners Rami Malek (Bohemian Rhapsody) and Glenn Close (The Wife) continued their streak in the lead role in a drama categories.

Rami Malek and Lucy Boynton enjoying the SAGs. Photo: Getty

“I just never in my wildest dreams thought that I could be in a category with these men,” Malik said. “It’s an honour I’m taken aback by.”

Black Panther became the first comic book superhero movie to win for best cast in a motion picture.

“We knew not that we would be around during awards season or that it would make a billion dollars,” said star Chadwick Boseman in a rousing final speech.

“But we knew that we had something special that we wanted to give the world … That we could create a world that exemplified a world that we wanted to see.”

SAG AWARD WINNERS

Outstanding Performance by a Male Actor in a Leading Role:
Rami Malek, Bohemian Rhapsody 

Outstanding Performance by a Female Actor in a Leading Role:
Glenn Close, The Wife

Outstanding Performance by a Male Actor in a Supporting Role:
Mahershala Ali, Green Book

Outstanding Performance by a Female Actor in a Supporting Role:
Emily Blunt, A Quiet Place 

Outstanding Performance by a Cast in a Motion Picture:
Black Panther

Outstanding Action Performance by a Stunt Ensemble in a Motion Picture:
Black Panther 

Outstanding Performance by a Male Actor in a TV Movie or Miniseries:
Darren Criss, Assassination of Gianni Versace

Outstanding Performance by a Female Actor in a TV Movie or Miniseries:
Patricia Arquette, Escape at Dannemora

Outstanding Performance by a Male Actor in a Drama Series:
Jason Bateman, Ozark

Outstanding Performance by a Female Actor in a Drama Series:
Sandra Oh, Killing Eve

Outstanding Performance by a Male Actor in a Comedy Series:
Tony Shalhoub, The Marvelous Mrs Maisel

Outstanding Performance by a Female Actor in a Comedy Series:
Rachel Brosnahan, The Marvelous Mrs. Maisel

Outstanding Performance by an Ensemble in a Drama Series:
This Is Us

Outstanding Performance by an Ensemble in a Comedy Series:
The Marvelous Mrs. Maisel

Outstanding Action Performance by a Stunt Ensemble in a Comedy or Drama Series:
Glow