I actually quite liked it for the first half, but by time the credits arrived I was very much awaiting the end.
'Confessions of a Teenage Drama Queen' has a few things going in its favour. Lindsay Lohan is very good, she definitely makes her character more interesting than she probably would've been without Lohan. You also have Megan Fox in her first sizeable film role, it's actually kinda odd seeing those two together onscreen for some reason.
Away from them, I enjoyed the editing and cinematography for the most part. I'm not saying it's anything insane or memorable but it's better than I would've predicted. The premise isn't the most clearly defined, at least in terms of its execution; it starts to drag from the midway point. It hits a fair amount of clichés too, though does avoid a few also; Lola (Lohan) doesn't instantly befriend Carla (Fox), for one.
Nothing dreadful, it just got boring as it went on; despite a low run time of 89 minutes. Lohan the star.