Kelly Brook has a beautiful figure; curvy and healthy, her attainable shape is one women have craved (and men have admired!) ever since her Page 3 days.

But now, in a new underwear selfie, Kelly, 34, seemed to have fallen prey to the dangerous "thigh gap" weight loss craze.

The model-turned-actress - who recently confirmed her engagement to body builder beau David McIntosh - stripped down to her spotty bra and pants, took a snap and posted it to the photo sharing site complete with arty black and white filter.

And she captioned it: "Mind the gap #belfie"

Some of Kelly's followers were quick to pull KB up on her "thigh gap" reference - one writing: "You don't need a thigh gap to be hot or attractive."

However many more praised Kelly's shapely bottom and underwear, choosing to ignore the "gap" reference.

Clinical psychologist Barbara Greenberg has previously warned that, for most women, the "thigh gap" is a pipe dream, even via extreme dieting and exercise.

"Most women are not built that way to have that space between their thighs," she said.

"It is a matter of bone structure," she explained, which "the majority of women do not have."

Fingers crossed that Kelly's younger and more impressionable fans will focus on her curves and healthy body shape rather than her 'thigh gap'.