Any chance of a reconciliation with Pete Wentz went out the window when Ashlee Simpson made her first red carpet appearance with new beau Vincent Piazza at the Boardwalk Empire premiere in NYC Wednesday.

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The 26-year-old singer -- who split with the Fall Out Boy rocker, whom she wed in 2008, earlier this February -- looked dazzling in a an embellished purple gown at the star-studded event; Piazza looked dapper in an Alexander McQueen suit.

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"She's a wonderful girl," Piazza told Us Weekly of Simpson, his girlfriend since June. "I'm so happy she's here tonight."

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No word yet on if Piazza will bring Simpson to Sunday's Emmy Awards; Boardwalk Empire is nominated in 18 categories (it won seven at last week's Creative Arts Emmys).

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