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Newlyweds Paul McCartney and Nancy Shevell aren't spending their honeymoon the way most mult-millionaires would -- they attended an film premiere in New York less than two weeks after tying the knot!

The couple, married October 9 in England, took in the new Rhys Ifans/Vanessa Redgrave political thriller Anonymous at the Museum of Modern Art in the Big Apple Friday.

McCartney, 69, and Shevell, 51, did make some time for some R&R after the wedding -- they spent time at pal Mick Jagger's private residence on the island of Mustique in the West Indies. The secluded property normally rents for $15,000/week.

The pair have a second wedding party planned for this week in NYC.