Holly Willoughby shocked viewers at home with her appearance on Tuesday's This Morning, who were left wondering if something was wring.

The always cheery presenter is famous for wearing equally bright outfits to host the show, with fashion fans often clamouring to find out where she got her dresses from.

So viewers were left rather startled when cameras rolled on the show to reveal Holly cutting a much more sombre figure, dressed all in black. and co-host Phillip Schofield also wearing dark clothes.

One tweeted: "Is holly Willoughby going to a funeral today all in black," and another remarked: "Is Holly grieving ?What the hell is she dressed in black for?She looks ill herself."

Picking up on the fact that Good Morning Britain host Susanna Reid also chose to wear black on Tuesday, another eagle-eyed viewer posted: "#ThisMorning Why is everyone wearing black today? Suzanna on gmb was wearing dark navy. It all looks a bit foreboding."

Both presenters took to the air the morning after the nation received the news that Prime Minister Boris Johnson had been moved to intensive care as he battles coronavirus.

And addressing this, another viewer tweeted: "surely Holly and Phil wearing black on @thismorning sends the wrong message about the PM out?"