The mum-of-three dazzled in a pink gown covered with crystals and feathers with a plunging neckline, but not everyone was singing her praises.
Broadcasting regulator Ofcom confirmed it received 341 complaints about the ITV show, with most not happy with Rufus Hound’s cutting remark about the government’s failure to feed hungry school children.
Others were from angry viewers offended by Holly’s cleavage, with some claiming it was obscene for a pre-watershed show.
One tweeted: “Why does Holly have to flash her boobs every time. It’s a family entertainment show. I just don’t get it. I would think so much more of her if she dressed like a lady and covered them up. #dancingonice “.
Another moaned: “OK I am going to say it Don’t really want to see the boobs out with little left to the imagination on TV Holly Willoughby last night #dancingonice and Osborne daughter on #GMBOscars this am Come on Directors more decorum please”.
A spokesperson said: “Most of the 341 complaints were about Rufus Hound’s comments about the government.
“We also received complaints about Holly’s dress, and the set-up of the programme given Corona rules.”
Rufus, who received the golden ticket this week meaning he is immune from the public vote, make a scathing remark about the conservative MPs who voted against free school meals.
MPs provoked a storm of criticism at the end of last year by voting down the Marcus Rashford-backed initiative to extend free school meals over the holidays.
“I’ve spent most of this year not emotionally stable because the world does not make sense and this does not make more sense of it,” Rufus said.
“We live in a world where the people we elect don’t want to feed hungry children, this is the least mad thing that has happened to me in a long time.”
He later clarified on Twitter: “To the people who want to be cross with me, you were never going to be my friend.
“I wish it were different, but such is the world we now live in.
“To everyone else, thanks for all your lovely messages. I will try to keep doing funny ice dances for you x.”
* Dancing On Ice continues on Sunday at 6pm on ITV