In case you wanted further proof that Dina Lohan is a raving, manipulative bitch, we have a perfect example of her usual diva behavior at the premiere of Sisterhood of the Traveling Pants 2. First of all, keep in mind that to be a diva, you must first be successful. And not suck. You have to EARN the right to be all demanding and snooty. Otherwise you’re just a bitch. Which is exactly what Dina Lohan is.

The senior Lohan brought daughter Ali and a friend to the movie’s premiere, where they managed to behave themselves. Then all shit broke loose at the after party, when Dina was politely asked to move after she plopped her ass in someone else’s reserved table.

Forget about Lindsay Lohan getting into trouble. Now it’s her mom, Dina, and sister, Ali, who have gotten themselves into a bit of a skirmish. Depending on whom you believe, Dina and Ali were either booted from last night’s New York City premiere of the Sisterhood of the Traveling Pants 2—or they decided to leave on their own.

I talked to Dina and some other guests, and, well, I’ll let you decide. Sources report that when Dina, Ali and a friend of Ali’s arrived to the after-party, they sat down at a reserved table. A studio staffer politely asked her to change tables, but “Dina “went apes–t,” a partygoer tells me. “It so wasn’t cool.”

So not cool that “Dina was quietly removed” from the rooftop soiree, another source says. Dina, however, claims she decided to ditch the party because she says that the studio staffer started raising his voice. “He made the girls uncomfortable,” Dina wrote in an email to me this afternoon. “At that point, the girls wanted to leave.”

But my party source insists, the studio folks “couldn’t have been nicer. Dina was so awful,” the source said.

[From E! News]

E also notes that the debacle became the “talk of the party.” Keep in mind that E! airs Dina’s crap-ass reality show Living Lohan, which is probably why they bothered to give Dina’s account of the whole thing. It doesn’t seem like they’re really buying it; just putting it in there for technicality’s sake. I really wish more people would put that woman in her place. It sounds like everyone else at the party was polite and dealt with an unpleasant situation in a normal and rational way. And the problem is either Dina Lohan or everybody else, I’m going to go with Dina.

Here’s Ali Lohan at the eco-friendly world premiere of “The Sisterhood of the Traveling Pants 2” at the Ziegfield Theater in New York City on Monday. Images thanks to WENN. Header of Dina at the event. Image thanks to PR Photos.