She found fame with her bubbly blonde look in

American Pie

but Tara Reid's appearance has changed dramatically since then, with recent pictures raising concern among fans.

Responding to images of Reid in a Christmas-themed crop-top and micro-skirt worn to a Halloween party, Twitter users asked if the star was in trouble.

"Please let us know you are ok Tara, we are all worried about you," one worried fan tweeted.

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Tara in 2005 (left) and at a Halloween party last weekend. Photos / Getty, Splash
Tara in 2005 (left) and at a Halloween party last weekend. Photos / Getty, Splash

The actress has been filming new anti-bullying movie

Worthless

and shared an image of herself made up to look battered and bruised.

She captioned the Instagram post: "Everyone be kind to each other. This is what bullying looks like #Worthless."

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Everyone be kind to each other. This is what bullying looks like. #WorthlessTheMovie #AntiBullying

A post shared by Tara Reid (@tarareid) on

In July Reid made headlines after walking out on a radio interview with Jenny McCarthy.

On air to discuss her role in the film Sharknado, the conversation turned into a cringe worthy exchange after McCarthy asked how Reid "got in shape" and pressed her for comment on past plastic surgeries.