Portman's son Aleph keeps watch during a stroll through L.A. Plus: Tina Fey, Heidi Klum & Tim Gunn, Jennifer Love Hewitt, Ryan Kwanten and more
Credit: Daniel Robertson/Startraks
Published: Thursday Aug 22, 2013 | 07:00 PM EDT
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The wheels are turning for a multitasking Steve Martin, who balances his bike and his iPhone – be careful! – in Los Angeles on Wednesday.
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