The actress, 49, posed up a storm in a figure-hugging tweed red dress as she appeared to talk about her new film The Fall Guy.
The Ted Lasso star showcased her enviable curves in the ensemble and flashed her ample cleavage in the dress which featured a low neckline, embellished with gold detailing.
She paired the dress with some simple gold heels and earrings as she beamed in snaps while making her way to the studio.
Hannah stars alongside Emily Blunt and Ryan Gosling in her new film, which is based on the 1980s television series of the same name and is helmed by John Wick director David Leitch.
Last week the London-born performer was overcome with emotion as she at The Grosvenor House Hotel in London.
Hannah won for the 2023 Song Contest, which she co-hosted with , and Julia Sanina.
Accepting her award, the actress shared: ‘I feel like I’m going to look back at photos like, “Can you stop grinning like a Cheshire cat?” I’m very pleased. It’s a little overwhelming.
‘As a live TV novice, BBC Studios grabbed me in, and, I don’t mean to be cheesy, they absolutely made me believe I could do this.’
‘When we finally went up, I can’t tell you how supported we felt. I would not be here if BBC Studios hadn’t reached out to me.’
Despite all her recent success, it was only four years ago that Hannah got her big break when she bagged the role of Richmond FC owner Rebecca Welton in the hit Apple TV+ series – which has earned her two for Best Supporting Actress.
She has since stunned audience and critics alike with her quick wit, old-school glamour and incredible singing voice.
Elsewhere at the RTS Awards, the top TV winners on the night went went to BBC dramas Time and Happy Valley, with star Sarah Lancashire taking to the stage to accept the award, despite skipping the pre-ceremony blue carpet.
Three-part series Time starred Jodie Whittaker, Tamara Lawrance and Bella Ramsey, as three inmates who all arrive at a Liverpool prison on the same day.
Tamara, 30, took home the Leading Actor – Female award for her role in the prison drama with the jury praising her ‘deep, layered performance’.
Bella, 20, was also recognized, winning the Supporting Actor – Female award over fellow nominees Jasmine Jobson for Top Boy and Ronkẹ Adékoluẹjo.
Happy Valley, which stars Sarah as Sgt Catherine Cawood and James Norton as murderer Tommy Lee Royce, beat out The Gold and Top Boy for the Drama award.