She’s been hard at work on her latest movie “The Baster,” and yesterday (March 30) Jennifer Aniston was spotted heading back to her hotel after a long day of filming.

The “He’s Just Not That Into You” cutie sported a long black double-breasted wool coat with slim fit jeans and brown suede boots as she passed the paparazzi.

And according to an insider, Miss Aniston has been a bit of a diva while working on her current project, keeping to herself and making everyone work around her schedule.

The source told press, “In the morning, the cast and crew had to wait to start filming without Jen because she asked for extra time to finishing blow-drying her hair,” adding, “Jen kept mostly to herself.  She didn’t talk to anyone during the breaks.”

And what’s more, “Jen refused to walk even a step outside the restaurant during the break for lunch.  She had her car pull up right next to the restaurant so she could be driven less than a block to her trailer to avoid photographers.”