Caroline Flack was apparently searched at an airport after her knickers set off the metal detectors.
The Xtra Factor presenter was travelling with co-hosts Dermot O'Leary and Matt Richardson when the embarrassing incident occurred, The Sun has said.
She was at Marseille airport on her way back from Louis Walsh's judges' houses round in St Tropez and had to remove her jewellery, but when the alarms still kept going off she was frisked and asked to step behind a screen.
Caroline, 33, emerged a minute later laughing, in time to catch her flight.
A friend said: "Caroline had some studding detail on her underwear that set off the alarm. She was a bit embarrassed but saw the funny side."