What unfortunate timing.

With 48 hours to go until Sunday's Academy Awards, Bridesmaids star and Best Supporting Actress nominee Melissa McCarthy has unexpectedly fallen ill.

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Skipping out on a pre-Oscars bash put on by the U.S.-Ireland Alliance Thursday, McCarthy was to be honored along with Michelle Williams, but bailed on the event on doctors' orders.

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A rep for the Los Angeles event -- attended by the likes of Colin Farrell and Dana Delaney -- confirms to Us Weekly that 41-year-old McCarthy is on strict vocal rest in hopes that she'll recover in time to hit Sunday's Oscars.

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"We were so sad not to have her there, but she needs to rest up to be healthy for the Oscars," the event staffer explained.

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