Ashlee Simpson's been the picture of patience all through her pregnancy - but she still succumbs to her hormones every now and again!

Yesterday, for instance, we caught the pregnant starlet dropping by Chin Chin for lunch with a pal. The scene was tense right from the start, with horns blaring and pedestrians screaming at the paps starting the moment Ashlee got out of her car. Eventually, all the pressure started getting to Ash - on her way out, she actually asked the paps to give her some space!

Naturally, the paps gave the pregnant pop princess all the room she needed as she left. Still, we could hardly believe our ears - after all, Ashlee's one of the most camera-friendly celebs around!