The pop star spells out a shout-out to sons Jayden and Preston during a shopping trip in L.A. Plus: Nicole & Keith, Jessica & Tony, Lauren Conrad and more

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ALL REVVED UP

David Hasselhoff is off to the races at the Gumball 3000 10th anniversary 8-day car rally, which kicked off in front of San Francisco's Fairmont Hotel Saturday. The Hoff was supposed to make his way down to Los Angeles in the new Knight Rider car, but KITT broke down en route to the event.