Score one for chivalry! In a tweet last night (that she tagged #dontf--kwiththeBrands) pop star Katy Perry did not mince words:

"If you cross the line & try an put a lens up my dress, my fiance will do his job & protect me."

Russell Brand was arrested Friday after a scuffle with a photographer at Delta Airlines security inside Los Angeles International Airport, where the engaged couple was allegedly being tailed by overzealous paparazzi. Brand reportedly lost his cool and came to blows with a few of the shutterbugs, one of whom made a citizen's arrest. LAX police then made it official.