ROBERT DOWNEY JR - DOWNEY JR PARTIES DRY

Raucous actor ROBERT DOWNEY JR. has conquered his drink and drug demons - but he still loves a great party.

The 38-year-old, who enjoyed an enforced spell in rehab last year (02) after drug convictions, is now strictly dry and sober - but the CHAPLIN star still found the resolve to hit Montreal, Canada on Saturday night (03MAY03).

According to the NEW YORK METRO, Downey Jr - who is in the Canadian city shooting GOTHIKA - attended a fundraising event for cancer sufferers, and preceded to munch on beef sandwiches and down glasses of cola.

A source tells the tabloid, "He was definitely having a good time."

A rep for the actor says one of his rehab sponsors was with him all night to help him stay on the straight and narrow.