If you've never had one, or don't have one in your city I would suggest Sprinkles Cupcakes. They are so yum! Best cupcakes I've had in a long time and I LOVE to bake. I can make amazing cupcakes but they are never as delish as Sprinkles. There's one in Beverly Hills, there's always a line, but so worth it.
Last time we were in LA we went to the Tar pits, drove through Beverly Hills and Rodeo Drive, Griffin Observatory, the park across from the Hollywood sign (you climb a huge hill and end up with a perfect view, I just can't remember the name) it's a park people use to run, shopped at the Beverly center,
LA Farmer's Market (it's open daily and has great shops and delicious food), and had amazing meals at fancy restaurants

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We did 2 full days at
Disneyland. This allowed us to do both parks, take in Fantasmic and World of Color, ride everything and take in the parks. I felt the parks were much less crowded than a normal day at WDW. A friend of mine lives in LA and said she hates summers at DL because it's so packed but I find that their version of packed is very different than my version of packed.