Simpson-Wentz makes her first post-baby appearance to support husband Pete Wentz in West Hollywood. Plus: Miley Cyrus, Angelina & Brad and more

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HEY, MAMA!

In her first public post-baby outing, Ashlee Simpson-Wentz leaves newborn son Bronx Mowgli at home Monday to attend a surprise Fall Out Boy concert at the Troubadour in West Hollywood. The new mom cheered on husband Pete Wentz and his band as they performed songs from their upcoming album, Folie à Deux.