Is Jessica Simpson Slipping?

At trendy bar Sound, Jessica Simpson stormed out after only a half hour of celebrating her younger sister’s success, as Roxie in the hit musical Chicago. While Ashlee shined on Sept. 25th in the performance, Jessica may have been contemplating her lack of recent success, in all areas of her life.

Speaking of Ashlee, Nick Carter claims he slept with her to get back at his ex, Paris Hilton.
The Backstreet Boys singer was so furious about the socialite cheating on him with Chad Michael Murray that he flew all the way to Australia to bed the 'Boyfriend' singer.

Star reports that several factors may be contributing to Jessica Simpson ’s growing depression, and angry outbursts.

First, Jessica needs a man in her live. She has gone through a string of unsuccessful flings since her divorce, while ex-hubby settles down with younger hottie, Vanessa Minillo. In addition, her latest CD and movie attempts have been less than successful. With album sales for new album, A Public Affair plummeting, and poor response to her performance in The Dukes of Hazzard, Jessica must be worried about upcoming movies Employee of the Month and Blonde Ambition. Also, Jessica has lost her signature style, wearing loose-grandma-ish clothing and cutting off her bombshell hair. With possible loss of fans due to her divorce from Nick, and bad advice from manager/Dad Joe Simpson, Jessica may have cause to worry. She’s certainly got a lot to deal with

Meanwhile, Jessica Simpson and John Mayer maybe hooking up again.

According to TMZ spies chilling at the posh Four Seasons Hotel in Beverly Hills Monday night, John Mayer invited a TMZ spy to his room to "talk." She declined

Jessica Simpson arrived at the bar a short time later and saw friend and producer Romeo Antonio sitting at a table. Jessica approached Antonio and chatted for a bit. Antonio then left the table to use he bathroom and while he was in the restroom, Mayer walked in. A very serious Mayer asked if there was anything going on between Antonio and Simpson. Antonio said there was not.