Sienna Miller: Dual Passport Travel!

Sienna Miller holds onto both her American and British passports as she makes her way through a security checkpoint at LAX airport on Friday (July 9) in Los Angeles.

The day before, the 28-year-old British actress and a mystery male were seen leaving a meeting at Universal Studios in Los Angeles.

Earlier this week, Sienna was seen spending quality time with her beau, Jude Law, in London.

10+ pictures inside of Sienna Miller back in Los Angeles…