Sheridan Smith
The Bafta winner found herself stuck in a lift with Stephen Fry as they made their way to the studio.
Stars like Paul Mescal, Jodie Comer and Beverley Knight all turned it out on the red carpet.
The new four-part drama explores the themes of parenthood, justice and consent.
The news comes one year after the couple welcomed a baby boy together.
Sheridan on the red carpet was truly a joy to behold.
The broadcaster has insisted every measure was taken to ensure "no dog was harmed physically or mentally by the process" of making the show.
Five celebrities remain in the contest – have you worked out their identities yet?
Radio 1's Nick Grimshaw was among the fans, who said Sheridan Smith's new show was "like a health elixir for my brain".
Holly and Phil's faces pretty much said it all.
The comedy legend marked the end of his career in an ITV special.