Marc Malkin

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.

Reps for the studio did not comment.

No surprise, but the heated spectacle became the talk of the party. "Other than that, it was a gorgeous night," another source said.