Jessica Simpson and little sister Ashlee Simpson have reportedly abandoned their plans for a sunny Christmas in Hawaii in favour of a break in Colorado instead.

According to In Touch Weekly, the two changed their plans to have a more private celebration because Jessica is feeling down at the moment.

An inside source told the magazine that Ashlee flew down to Louisiana recently to see Jessica on the set on her new film Blonde Ambition because Jessica’s unhappy: “she didn’t leave her trailer for two days.”

Jessica is reportedly still unhappy about the Kennedy Honors ‘9 to 5′ flub but according to a report in More magazine, she’s been depressed since her divorce from Nick Lachey was finalised earlier this year.

A source told the magazine she suffered from panic attacks and agroraphobia: “[Jessica] started staying home more and more. Her problems developed for a while and got worse after her divorce from Nick.”

“She barely left the house unless she was working. It got so bad she suffered panic attacks. It felt as if the world was closing in on her. Her blood pressure rose, she got dizzy and she actually felt as if she was suffocating.”