The rupee collapsed to a new all-time low on Monday, marking its weakest close for the third straight session, as the dollar charged ahead, leaving behind a slew of currencies at lifetime or multi-year lows driven by fears that aggressive policy tightening by major central banks would hurt economic growth. Bloomberg showed the rupee was last at 81.5675, after crashing to a new record low of 81.5225 and having crashed to 81.6612, its weakest ever, during the session on Monday.