Demi’s former personal trainer and fitness expert to the stars Robb Parr tells all in his explosive new book revealing the secret of how he transformed the husky-voiced actress from a “meaty” middle-aged woman into a stunning, buff hottie.

He describes his clients like Demi as a former soft-bodied actress who is a mom of three from her ex-husband actor Bruce Willis that needed intense training to whip their figures into shape.

“Demi lacked a define waist and carried too much meat on both of her thighs and was, by movie star standards, thick overall.”writes Robb on his fitness manual.

“To taper her waist, we decided to accentuate her shoulders, creating a V-shape. We trimmed her thighs, shaving off some of the excess fat from above her knees and accentuated her butt, further emphasizing her waist.”

Robb Parr once trained Australian actress Naomi Watts who is said to have started off as a “fleshy” lady that needed to get her trim and tightened so that she would fit the mould of a bikini-clad babe.