Jessica to Paps: "Back Off!"

3/15/2007 1:17 PM PDT BY TMZ STAFF
Back from her Roman holiday, a visibly pissed off Jessica Simpson had some terse words for swarming photographers on Wednesday.

After leaving Hahm Rejuvenation Center in West Hollywood, Jessica was in no mood to deal with her usual BFFs, the paparazzi.

As camera hounds crowded around her, Simpson barked, "You guys, please, please back off! It's really not cool." The 26-year-old divorcee was able to maneuver her way to a waiting black Mercedes convertible, adding, "I'm trying to respect you guys, but this is very rude."

If Jess wants people to leave her alone, she should just sing.