The presenter had an almighty wardrobe malfunction as she hosted the ITV show in a boob-baring look.
As she prepared to interview Camilla Thurlow and Jamie Jewitt, the 37-year-old’s little black dress fell down revealing her body tape to millions at home.
It was impossible to miss Caroline’s not-so-secret weapon under the heavy studio lights, after she opted for a strapless number.
The former X Factor host seemed oblivious to the blunder, while she flashed her cleavage and pins in the plunging, prom-style gown.
Caroline Flack revealed a little too much during the Love Island reunion last night
Caroline Flack's body tape was clearly on show
Outrageous celebrity wardrobe malfunctions
Thu, June 29, 2017
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Chrissy Teigen left red-faced as she suffers epic wardrobe malfunction on stage
Does someone want tell Caroline Flack that her t** tape has come unstuck?
However, viewers were quick to point out the embarrassing situation on Twitter, after a series of awkward segments on the spin-off programme.
“Does someone wanna tell Caroline Flack that her t** tape has come unstuck and her dress is hanging off?” someone questioned.
Another agreed: “The only reunion that's needed is Caroline's t** tape with her t** (sorry Flack, love you)."
Caroline Flack wowed in a strapless black dress
Caroline Flack with one of contestant Chris at the after party
She had previously tweeted her 1.93 million followers: “Also… forget the Oscars… forget the Grammys… tonight on Love Island we have 'The Muggys'. You can vote in the app.”
It comes just days after Caroline appeared to make a huge gaffe during an appearance on Sunday Brunch.
“If you saw it last year, the couple… there’s a point where they… um… Actually it might change this year so I better not say it,” she stated before stopping herself.