Blake Fielder-Civil has started divorce proceedings against his Grammy Award-winning wife Amy Winehouse, Britain’s Daily Mail has confirmed.

The incarcerated heroin addict is reportedly filing on the grounds of adultery after being shown pictures of Amy canoodling on the Caribbean island of St. Lucia with 21-year-old rugby player Josh Bowman.

Blake Fielder-Civil has instructed celebrity lawyer Henri Brandman to file papers over the weekend.

“I can confirm that I have been instructed to commence divorce proceedings on the grounds of Amy’s adultery,” Brandman said in a statement Sunday.

The attorney claims the scorned hubby will sue for half of Wino’s fortune and could claim a $20million payoff because the pair married without a prenup in May 2007.