Sienna Miller Debuts New Short Bob Haircut - See the Pic!

Sienna Miller and her fiance Tom Sturridge hop into the back seat of a cab after a night out at the Chiltern Firehouse on Wednesday (July 2) in London, England.

The 32-year-old actress debuted her brand new short bob haircut that evening!

Also spotted out at the celeb hotspot that night was model Irina Shayk, who stars in the upcoming movie Hercules.

Earlier that day, Irina attended a photo call to promote the movie with her co-star Dwayne “The Rock” Johnson.

10+ pictures inside of Sienna Miller and Irina Shayk leaving the restaurant…