The This Morning presenter appeared on The Jonathan Ross Show alongside Demi Lovato and Martin Clunes to talk about her new book, Truly Scrumptious Baby.
Holly Willoughby – who has everyone talking about her weight loss – revealed her dress choice ahead of the show airing with her 2.5 million followers on Instagram.
The stunning mini dress featured all the colours of the rainbow and was covered in glitter.
Sharing a video of the cute number, Holly, 36, wrote: “The night I wore a rainbow #jonathonrossshow #HWStyle.”
And sharing a picture of the sparkly dress, the mum of three just shared a caption of stars and rainbows.
Fans quickly took to social media to gush over the dress, labelling it “perfection” and questioning Holly over where she got it from.
Holly leaves fans begging for answers as she fails to disclose where this sparkly number is from [Instagram]
Commenting, one fan wrote: “Need this dress in my life like now.”
Another added: “Wowzers now that’s stunning you shine anyway but wow with that dress.”
Even Holly’s stylist Angie Smith was praised for the decision.
One fan wrote: “Oh @angiesmithstyle where is this from? It’s amazing your styling is always.”
Holly finished off the look with metallic heels and wore her blonde locks in a loose low bun.
However, unlike Holly, the ITV presenter didn’t share where she got her incredible dress from, leaving fans begging for answers.