With a trash bag in her hand and a cigarette hanging out of her mouth, Kristen Stewart knows how to act like a lady ... NOT!

On Tuesday the grungy yet gorgeous Twilight star was snapped in Los Feliz, and we love her, but she definitely looks like she could use a shower ... and a pair of clean socks.

But what's that big black object in K. Stew's hand? It turns out it's a stand for fireworks, which are illegal in California. Tsk tsk! Maybe she plans on lighting them off in the desert this weekend? Given the amount of time she's been spending with Rob Pattinson lately, we're willing to bet that they'll be heading back to Indio for Coachella on Thursday or Friday.

K. Stew will then be heading to Argentina soon to begin filming Focus, so she's cramming in as much time as possible with her beau before she leaves. The two went to Coachella together last Saturday, and they've gone out a number of times since he returned to Los Angeles after filming The Rover in Australia. It seems like the cheating scandal has just about blown over, but we find it very hard to believe that Rob is into K. Stew's dirty/hot look...