Star Tracks

Aguilera and her husband stop by a Babies 'R Us store in L.A. to shop for their son. Plus: Mary-Kate Olsen, Rihanna, Nicole Kidman and more

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FIRST HAND

Rihanna makes young fans her first priority during an intimate performance Wednesday at Chicago's Vision nightclub. As part of her "A Girl's Night Out Tour," the pop star gave a performance benefiting her charity, the Believe Foundation, before signing autographs and meeting with kids.

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