The musician, 45, caused a nationwide stir when she stripped down to the two-piece for a wash in 2006.
Myleene hopped into the waterfall shower in the Australia jungle and, although it was the noughties, the images went the equivalent of viral.
The former Hear’Say singer has now entered the South African camp for the I’m a Celebrity All Stars series – and spoken about her iconic swimsuit.
Speaking to the camera before she met her latest batch of co-stars, Myleene said: “The first time I was on I’m A Celebrity was in 2006 and it was a lifetime ago.
“You might know me for a white bikini. I spent $40 on it and when I came out, I auctioned it for £7,500.”
Myleene sold her white bikini to raise money for charity – and fans are stunned by how much it fetched at auction.
On hearing her admission, one tweeted: “Selling a bikini? For £7K?! She’s got the right idea!”
Another added an emoji of shocked eyes, adding: “£7500!”
And someone else tweeted: “She auctioned her bikini? For how much?!”
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Myleene is among three new stars who have made a late entrance into camp. She has been joined by 2017 winner Georgia Toffolo and 2019 runner up Andy Whyment.
Before heading into camp, the star recreated her white bikini moment by modelling her own swimwear collection for Next, including a white bikini.