Snoop Dogg would be so proud.

Deranged pop singer Amy Winehouse, battling serious hard drug addiction, has apparently fashioned a new plan to break her worst habits: just smoke weed.

Pals say the "Rehab" singer, 25, has been smoking up 10 spliffs (joints) a day during her never-ending St. Lucia vacation to suppress cravings for hard drugs.

Amazingly, those close to A-Dubs are encouraging this $1,000-a-week habit - as it's been giving her the munchies and helping her get back to a healthy weight.

A close friend said: "Amy hasn’t touched crack or cocaine for months. She's been good. Drugs are easy to get in St. Lucia but she has stuck to smoking dope."

TEN JOINTS A DAY: Hey, at least it's not crack.

"The amazing thing is she smokes all morning then sees her personal trainer in the afternoon and is put through a gruelling workout," added the friend.

When she's not shagging Josh Bowman or her new boy toy Andrew, Amy Winehouse has also kept busy giving singing lessons to kids at a school near her villa.

The head teacher was said to be horrified when the train wreck turned up at class wearing a bra and skimpy vest, however. Anyone surprised?

"They scrabbled around and found a spare PE kit for her to wear," said a source at the school. "And because she’s so tiny, it fit fairly well."

Awesome. Back in the UK, Amy's estranged husband, Blake Fielder-Civil, is surely taking notes as he prepares his list of reasons to divorce her.