But the Dancing On Ice presenter has revealed she has no intention of covering up her car-crash curves any time soon.
In a new interview, the 27-year-old says: “I'm not going to change my entire wardrobe just because of what people have said. I love the dresses I wear, I think they are beautiful and until I think differently, I'll carry on.
“I'm womanly, I have boobs and hips and I dress to accommodate them - that's not going to change. Why should it?”
“People say: 'You're a real curvy woman, you look great – go for it!' and everyone on the show thinks it's hilarious”
“I'm proud of my curves and I've always worn low necklines.”
Holly says that the focus on her décolletage doesn't concern her, describing the press coverage as mostly “positive”.
The star also revealed she wasn't always so buxom, telling the Daily Mirror: “It's ironic that I became a bra model. When I was at school I was known as the flat-chested girl. I blossomed late.”
She adds that her TV producer husband Dan Baldwin copes well with the amount of attention she receives.
She says: “He's as surprised as I am but he's cool about it. I suppose he's always seen me in low-cut tops so it's nothing new. He loves my body… he loves what I wear.
Not all Dancing On Ice viewers share his opinion. On Sunday night, Holly's backless - and almost bottomless - dress revealed far more flesh than the most daring of necklines.
An audience member said: "From the front the black dress looked very restrained - but as soon as Holly turned her back, it looked like she was in danger of revealing a builder's bum."
The dress was made by Jovani, the designer also behind the controversial white low-cut number which led to the initial outcry about the presenter's suitability for the ITV show's family audience.
Jovani also created the revealing peach silk dress Miss Willoughby wore on the show before going out to celebrate her 27th birthday.
The low-cut white dress Miss Willoughby wore last month prompted scores of comments from viewers.
"Why doesn't she stop messing around and just do the show topless?" one asked on a TV website message board.
Another wrote: "My husband and I have great fun trying to bet how low her top will be each week. She does struggle to keep them in, doesn't she?"
Others suggested Miss Willoughby's revealing wardrobe was far from suitable for Sunday night family viewing.
Her outfits were said to be diverting attention from the celebrities competing for the trophy and from her co-host Phillip Schofield.
It's not the first time she has proved a distraction. Four years ago Miss Willoughby raised eyebrows when she accidentally flashed a breast as she danced on the children's show Ministry of Mayhem.
