What's Got Britney Laughing?

We caught Britney in the middle of a big laugh with her mom Lynne while the pair were having their nails done in Studio City on Tuesday.

And check out how they got to the salon! Brit and her mom hitched a ride with her gardener. They just piled in the guy's big white pick-up with a bunch of plants in there and everything.

However she gets around, it is sure good to see Brit smiling and laughing and just having a great girl's day out with her mom.