With jail looming, Hilton steps out with her sister for a night of fun in L.A. Plus: Denise Richards, Eva & Marcia and more

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BEING NEIGHBORLY

A slimmed-down Marcia Cross and Eva Longoria spend some quality time catching up at the BlackBerry Curve launch party in Los Angeles on Thursday. But Cross tells PEOPLE she may not be able to attend Longoria's Paris nuptials next month due to her 3-month-old twins: "We have no idea what it's going to be like traveling, so we'll have to figure it out."