Britney's Big Mac Attack

It's Britney's unhappy meal, as she and a friend attempted to get to the drive-thru of a Los Angeles McDonalds but were ambushed by a pack of paparazzi!

“Can you please stop?” Brit yelled at the photogs.

The pop princess then lowered her baseball cap and rolled up the window, but that didn't stop the pesky paparazzi from snapping away.

The very next night, “Extra” caught up with Brit at the grocery store, where she checked out air fresheners and bought some prepared food.

“Extra” is also breaking new custody news in Britney's bitter battle with her ex, Kevin Federline.

“Extra” talked exclusively to K-Fed's attorney, Mark Vincent Kaplan, who told us, “I think that both sides are diligently working to settle the case, and I think it will fairly soon; he's totally immersed in being a full-time dad.”

“I feel like I'm just going through a lot of changes, as I have my whole life,” K-Fed told us. “And right now, I'm just trying to stay positive.”

Click on an image below to see the Britney Spears photo gallery!