02/10/2011 12:52 pm ET Updated May 25, 2011

Heidi Montag: Jennifer Aniston Banned Me From 'Just Go With It' Premiere

UPDATE: Jen's reps tell Celebuzz that Heidi's story is false:

"We do not have anything to do with who gets invited, but besides that, Sony did invite Heidi to the premiere and did not get an rsvp from her."

PREVIOUSLY: Heidi Montag makes her big screen debut with a cameo in 'Just Go With It' alongside Jennifer Aniston, but she was absent from the movie's New York premiere on Tuesday--because Jen wanted it that way, she says.

"I'm so upset," Heidi told Us Weekly. "I was so excited! This is the first movie I've ever been in and I can't walk the red carpet because Jennifer Aniston decided I was 'too polarizing.'"

Heidi claims that she struck a deal with producers to stay away from other promotional events but it was Jen who banned her from the premiere. Jen's rep denies the story.

Jen may find herself involved in Heidi drama now, but she has put any ill will towards Angelina Jolie behind her, if Perez Hilton is to be believed. Perez recently told Life & Style that during a chance encounter in a parking garage, Jen told him, "Look, that was so long ago, and we've moved on and we're all adults."

'Just Go With It' opens Friday, and Heidi isn't letting her alleged beef with Jen get in the way of using Jen's name to promote the movie.

"See me with Adam Sandler & Jennifer Aniston in "Just Go With It!" this Friday! Check out the trailer!" she tweeted Monday.