The reality TV star borrowed the frock famously worn by the original blonde bombshell to breathlessly sing Happy Birthday to John F Kennedy at Madison Square Garden in 1962 for Sunday night's annual fashion extravaganza in New York.
But it was her admission that she went on a crash diet to squeeze into the curve- kissing gown that proved the biggest bombshell.
Shimmering with 6,000 crystals hand-stitched onto flesh-coloured mesh fabric, the piece of history, made by French costume designer Jean Louis, doesn't exactly leave much room for 'bread belly', with even impossibly proportioned Kim confessing she had to shed 16lbs to get it to zip.
Speaking to Vogue on the red carpet, the 41 year-old told how she had basically gone on the Tinseltown version of Lent by quitting sweets for three weeks in the run-up to the glitzy fundraiser for the Metropolitan Museum of Art's Costume Institute.
"It was such a challenge," she revealed. "It was like a [movie] role. I was determined to fit [into] it. I haven't had carbs or sugar in about three weeks."
Although it's frankly nothing that plenty of women haven't done in the run-up to their wedding (or even someone else's wedding), for modern day icon Kim - who has 283 million followers on Instagram - it was definitely a bit of a blonde moment.
In an era when we're all supposed to be loving our curves à la body positive stars like Lizzo, or the very least not starving ourselves to squash into a dress that was literally designed for someone else's body, the mum of four has been accused of glamorising extreme diets while promoting unrealistic body standards for women.
Let's just say it didn't take too many guesses to figure out who actress Lili Reinhart was talking about on Instagram on Tuesday when she slated "stupid, harmful celebrities" who "openly admit to starving" themselves "all to fit in a f***ing dress".
And I'm not sure her personal trainer Don Brooks made the situation any better by arguing that she had lost the weight the "healthy way" - eating tomatoes and sweating in a sauna suit twice a day - in order to channel the Gentlemen Prefer Blondes star for mere minutes.
Although she quickly changed into an exact replica, personally, I'm more upset at Ripley's Believe it or Not Museum for loaning the shapewear queen the €4.5m dress in the first place.
What next - Justin Bieber rocking Gandhi's sandals at the Grammys or Zendaya sporting Padre Pio's fingerless glove at the Oscars?
If nothing else, the controversial look should finally put paid to the enduring myth that the 1950s' pin-up, who died of an overdose aged 36 just three months after wearing the dress, was in any way plus-sized; or that the curvy Skims founder, who skipped the after parties to hoover up pizza and donuts with her fella Pete Davidson, is her contemporary equivalent.
HARDMAN of snooker Ronnie O’Sullivan gave a rare glimpse at his softer side after winning his seventh World Snooker title on Monday.
In another unforgettable sporting moment this week, the 46 year-old sobbed in his rival, Judd Trump’s arms after equalling the record previously set by Stephen Hendry at the Crucible, and making history as the oldest player ever to lift the trophy.
“What he said just done me in,” a tearful Rocket later told of the emotional embrace.
Guess he was just in a different frame of mind while rowing with the ref earlier in the final.
Amid the shock revelation that Roe versus Wade, the landmark ruling which legalised abortion across the US in 1973, could be overturned by the Supreme Court, Ireland this week also seemed to be going backwards when it comes to womens’ healthcare.
Quite reasonable concerns persist over the relocation of the new National Maternity Hospital to a site at St Vincent’s Hospital – up to recently owned by the Religious Sisters of Charity – which is set to be leased to the State for 299 years.
Given that the organisation behind the Magdalene laundries had to get Vatican approval to transfer ownership to a new charity, and failed to gift the land to the State, how many people believe Health Minister Stephen Donnelly’s assurance on Morning Ireland on Wednesday that the new hospital will be “fully independent”?
UNDISPUTED champ Katie Taylor must no longer simply be categorised as ‘Ireland’s greatest female athlete’ or ‘Ireland’s greatest female boxer’.
After beating Amanda Serrano to remain lightweight champion of the world last weekend, and even long before it, she now surely ranks as the greatest sportsperson the country has ever produced – full stop.
Describing the historic headline clash at Madison Square Garden as “the best night” of her career, the Bray Bomber told: “Just walking out to the ring looking at a packed stadium, it was unbelievable. It was an absolutely special, special moment.”
It’ll be gloves off for tickets if the pair go toe to toe once more at Croke Park later this year as hoped.