Where did Britney get her perfect clutch that goes with everything? Well, she designed it herself! And no, she doesn't have her own line, but you can go on to http://www.1154lill.com/ and design one yourself!
Brittany designed an ERINN clutch in Ivory Sheen ($96), the same clutch carried by celebs like Jen Garner, Carissa Capobianco, and Tenley Molzahn! http://www.1154LILL.com/.