Heidi Montag has claimed Jennifer Aniston banned her from attending the premiere of their new movie 'Just Go With It'.

The 24-year-old reality TV star was left "upset" when she was told she wasn't needed to promote 'Just Go With It' - in which they both appear - on the red carpet in New York this week because she was "too polarizing"

Heidi, who claimed she designed a dress especially for the occasion, said: "I'm so upset. 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 polarising'.

"I've been such a huge Jennifer Aniston fan my entire life and it's just really upsetting that she would do this to me."

The former 'Hills' star - who is married to Spencer Pratt - insists Jennifer should be more understanding of someone who is new to the film industry.

She added to Us Weekly magazine: "She should know how hard it is to make a career for yourself and to have someone like Jennifer Aniston go out of her way to make things hard for me is really disheartening."

However, a spokesperson for Jennifer has dismissed Heidi's allegations, insisting the 41-year-old actress had no authority to decide who was allowed at the premiere.

Her representative said: "This is absolutely false, Jennifer has nothing to do with who was or was not invited."

Former 'Friends' star Jennifer walked the red carpet on Tuesday (08.02.11) with Nicole Kidman, Adam Sandler and Brooklyn Decker who all star in the film.