Los Angeles - (Reuterus): According to celeb LA garage WheelNutzz the white $210,000 Lamborghini Gallardo coupé, a 16th birthday present from rapper P-Diddy, had just been professionally serviced.
Its plush interior includes a customised python-skin glove compartment - where Ms Villegas' $250-a-pop black cherry-themed Victoria's Secret high-legs were discovered.
Car mechanics said today Jasmine must have 'accidentally' left them in the back of Justin's sports car, still intact in their packaging, after an LA shopping spree.
"No one's saying Jasmine had actually been wearing the panties," WheelNutzz's lost property department commented, "because that would mean someone had deliberately taken them off prior to, er, losing them.
"Besides, the panties were in mint condition, no signs of any ripping or tearing, no scorch marks, skid marks or any kind of er, Lewinsky-style staining."
A spokesperson for Villegas and Bieber said this afternoon that youngsters these days are probably just as forgetful as their parents were during their own heady teenage years.
"There is no question the underwear is actually Justin's," Calfornia's LA FagHagSlagMag celebwatch website concurred.
"What would such a glam, hetero young star like Mr Bieber be doing fuelling cheap cross-dressing rumors about such unthinkable proclivities anyway?"
Miley Cyrus is 69.