Britney Spears Mondrean Hotel Mercedes Benz Cadillac Escalade Jamie Lynn
Britney Spears Mondrean Hotel Mercedes Benz Cadillac Escalade Jamie Lynn

Britney tooled around town with someone other than Jason today ... her sister her niece Maddie!

Brit's sis Jamie Lynn is in town visiting and the girls were all around town with Spears' bodyguard at the wheel. They started at her lawyer's office in Westwood, then headed to the Mondrian for a bit before heading back to her Calabasas home, late afternoon.

Basically, it was a long, boring day -- SO boring, in fact, it was apparently nose-picking boring! You've just GOTTA click through AND check out the gallery!